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Artin's conjecture on primitive roots

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1005:, for g sufficiently large (i.e. g>20), then indeed Goupta and Murty obtainded an asymptotic formula for all prime numbers with positive main term, for some particular classes of elliptic curves with complex multiplication, and one could ask what are the minimum subsets of P1, P2,...,Pg, for which such asymptotic formula exists. This result could be considered as an analogous to Artin's primitive root conjecture! 974:
stated for all prime numbers and which probably is totally false! Moreover Gupta and Murty proved that the main term of their asymptotic formula is positive for some particular classes of elliptic curves with complex multiplication. If one consideres the group P generated by several independently linear points P1, P2,...,Pg in
973:
with complex multiplication under the Generalized Riemann Hypothesis, for primes splitting in the relevant imaginary quadratic field, i. e., they proved some asymptotic formula for only half of the prime numbers without actually verifying any particular case of Lang and Trotter conjecture which is
321: 1157: 918: 1419: 200: 390:(2) = {3, 5, 11, 13, 19, 29, 37, 53, 59, 61, 67, 83, 101, 107, 131, 139, 149, 163, 173, 179, 181, 197, 211, 227, 269, 293, 317, 347, 349, 373, 379, 389, 419, 421, 443, 461, 467, 491, ...}. 850: 1258: 783: 522: 1003: 634: 553: 971: 1540: 725: 754: 1183: 689: 1454: 583: 663: 1041: 1203: 1084: 1061: 938: 803: 603: 467: 1740: 380: 330: 184: 1735: 1089: 1568: 1533: 1563: 76:
on September 27, 1927, according to the latter's diary. The conjecture is still unresolved as of 2024. In fact, there is no single value of
1704: 1620: 1526: 855: 1491:
Hasse, H (1966). "About the density of prime numbers p, for a given integral number a not equal to 0 of even or odd order mod p".
1730: 1558: 1725: 418: 1650: 1288: 1590: 316:{\displaystyle C_{\mathrm {Artin} }=\prod _{p\ \mathrm {prime} }\left(1-{\frac {1}{p(p-1)}}\right)=0.3739558136\ldots } 16:
This article is about the conjecture of Emil Artin on primitive roots. For the conjecture of Artin on L-functions, see
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It has 38 elements smaller than 500 and there are 95 primes smaller than 500. The ratio (which conjecturally tends to
1625: 1699: 1575: 808: 1684: 1630: 1278: 1208: 1610: 343:
does not satisfy the above conditions. In these cases, the conjectural density is always a rational multiple of
432:
proved in 1986 (Corollary 1) that at least one of 2, 3, or 5 is a primitive root modulo infinitely many primes
1689: 1657: 1645: 1674: 1615: 1595: 1580: 1275:, a number that plays the same role in a generalization of Artin's conjecture as Artin's constant plays here 43: 1669: 1600: 1662: 1448: 1635: 1272: 759: 472: 1679: 1640: 977: 608: 527: 436:. He also proved (Corollary 2) that there are at most two primes for which Artin's conjecture fails. 946: 1694: 113: 694: 1605: 1504: 1352: 1283: 410: 174: 58: 730: 429: 414: 1162: 668: 1496: 1434: 1379: 1336: 17: 1348: 561: 1344: 639: 62: 1018: 1309: 1188: 1069: 1046: 923: 788: 588: 452: 1719: 1508: 1356: 163: 39: 24: 1439: 73: 47: 1015:
Krishnamurty proposed the question how often the period of the decimal expansion
920:. Here we exclude the primes which divide the denominators of the coordinates of 1401: 1340: 69: 54: 1152:{\displaystyle g^{\left({\frac {p-1}{2^{j}}}\right)}\not \equiv 1{\bmod {p}}} 147:) has a positive asymptotic density inside the set of primes. In particular, 1383: 1518: 1370:
D. R. Heath-Brown (March 1986). "Artin's Conjecture for Primitive Roots".
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The claim is that the period of the decimal expansion of a prime in base
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Without the generalized Riemann hypothesis, there is no single value of
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to these primes. This conjectural density equals Artin's constant or a
32: 92:
be an integer that is not a square number and not −1. Write
339:
Similar conjectural product formulas exist for the density when
1522: 1469: 943:
Gupta and Murty proved... the Lang and Trotter conjecture for
913:{\displaystyle N(P)\sim C_{E}\left({\frac {x}{\log x}}\right)} 1140: 524:, Lang and Trotter gave a conjecture for rational points on 375: 325: 179: 366:
for which 2 is a primitive root has the above density
1327:
Hooley, Christopher (1967). "On Artin's conjecture".
1211: 1191: 1165: 1092: 1072: 1049: 1021: 980: 949: 926: 858: 811: 791: 762: 733: 697: 671: 642: 611: 591: 564: 530: 475: 455: 203: 1252: 1197: 1177: 1151: 1078: 1055: 1035: 997: 965: 932: 912: 844: 797: 777: 748: 719: 683: 657: 628: 597: 577: 547: 516: 461: 417:for the conjecture, assuming certain cases of the 362:= 2. The conjecture claims that the set of primes 315: 558:Specifically, they said there exists a constant 555:analogous to Artin's primitive root conjecture. 195:, which can be expressed as an infinite product 1402:"Artin's Primitive Root Conjecture – a survey" 1534: 8: 845:{\displaystyle {\bar {E}}(\mathbb {F_{p}} )} 401:) is 38/95 = 2/5 = 0.4. 1453:: CS1 maint: numeric names: authors list ( 1253:{\displaystyle p\equiv 1+2^{j}\mod {2^{j}}} 1541: 1527: 1519: 1438: 1244: 1239: 1238: 1228: 1210: 1190: 1164: 1143: 1139: 1119: 1102: 1097: 1091: 1071: 1048: 1025: 1020: 988: 987: 979: 959: 958: 953: 948: 925: 888: 878: 857: 833: 832: 829: 827: 813: 812: 810: 790: 769: 768: 765: 763: 761: 735: 734: 732: 701: 696: 670: 641: 619: 618: 610: 590: 569: 563: 538: 537: 529: 493: 480: 474: 454: 272: 242: 235: 209: 208: 202: 1263:The result was proven by Hasse in 1966. 428:for which Artin's conjecture is proved. 80:for which Artin's conjecture is proved. 1300: 691:) for which the reduction of the point 1446: 373:. The set of such primes is (sequence 1470:"Primitive points on elliptic curves" 1420:"Primitive points on Elliptic Curves" 756:generates the whole set of points in 29:Artin's conjecture on primitive roots 7: 1395: 1393: 1372:The Quarterly Journal of Mathematics 585:for a given point of infinite order 709: 1741:Unsolved problems in number theory 440:Some variations of Artin's problem 255: 252: 249: 246: 243: 222: 219: 216: 213: 210: 187:), this density is independent of 14: 1308:Michon, Gerard P. (2006-06-15). 778:{\displaystyle \mathbb {F_{p}} } 517:{\displaystyle y^{2}=x^{3}+ax+b} 1736:Conjectures about prime numbers 1440:10.1090/S0002-9904-1977-14310-3 1234: 998:{\displaystyle E(\mathbb {Q} )} 702: 629:{\displaystyle E(\mathbb {Q} )} 548:{\displaystyle E(\mathbb {Q} )} 992: 984: 966:{\displaystyle E/\mathbb {Q} } 868: 862: 839: 824: 818: 740: 713: 703: 652: 646: 623: 615: 605:in the set of rational points 542: 534: 419:generalized Riemann hypothesis 293: 281: 1: 1205:is unique and p is such that 136:. Then the conjecture states 1289:Cyclic number (group theory) 720:{\displaystyle P{\pmod {p}}} 1418:Lang and 2 Trotter (1977). 1279:Brown–Zassenhaus conjecture 132:is a primitive root modulo 124:) the set of prime numbers 68:The conjecture was made by 1757: 749:{\displaystyle {\bar {P}}} 158:Under the conditions that 15: 1554: 1341:10.1515/crll.1967.225.209 1086:is even if and only if 1549:Prime number conjectures 1468:Gupta and Murty (1987). 177:to 1 modulo 4 (sequence 1731:Algebraic number theory 1700:Schinzel's hypothesis H 1178:{\displaystyle j\geq 1} 684:{\displaystyle p\leq x} 439: 46:modulo infinitely many 1726:Analytic number theory 1474:Compositio Mathematica 1254: 1199: 1179: 1153: 1080: 1057: 1037: 999: 967: 934: 914: 846: 799: 779: 750: 721: 685: 659: 630: 599: 579: 549: 518: 463: 317: 1705:Waring's prime number 1493:Mathematische Annalen 1427:Bull. Amer. Math. Soc 1384:10.1093/qmath/37.1.27 1255: 1200: 1180: 1154: 1081: 1058: 1038: 1000: 968: 935: 915: 847: 800: 780: 751: 722: 686: 660: 636:such that the number 631: 600: 580: 578:{\displaystyle C_{E}} 550: 519: 464: 318: 1329:J. Reine Angew. Math 1209: 1189: 1163: 1090: 1070: 1047: 1019: 978: 947: 924: 856: 809: 789: 760: 731: 695: 669: 658:{\displaystyle N(P)} 640: 609: 589: 562: 528: 473: 453: 201: 31:states that a given 1670:Legendre's constant 1036:{\displaystyle 1/p} 1621:Elliott–Halberstam 1606:Chinese hypothesis 1501:10.1007/BF01361432 1310:"Artin's Constant" 1284:Full reptend prime 1273:Stephens' constant 1250: 1195: 1175: 1149: 1076: 1053: 1033: 995: 963: 930: 910: 842: 795: 775: 746: 717: 681: 655: 626: 595: 575: 545: 514: 459: 449:An elliptic curve 411:Christopher Hooley 358:For example, take 313: 260: 65:multiple thereof. 59:asymptotic density 38:that is neither a 1713: 1712: 1641:Landau's problems 1198:{\displaystyle j} 1125: 1079:{\displaystyle g} 1056:{\displaystyle p} 933:{\displaystyle P} 904: 821: 798:{\displaystyle E} 743: 598:{\displaystyle P} 462:{\displaystyle E} 430:D. R. Heath-Brown 415:conditional proof 297: 241: 231: 57:also ascribes an 1748: 1559:Hardy–Littlewood 1543: 1536: 1529: 1520: 1513: 1512: 1488: 1482: 1481: 1465: 1459: 1458: 1452: 1444: 1442: 1424: 1415: 1409: 1408: 1406: 1397: 1388: 1387: 1367: 1361: 1360: 1335:(225): 209–220. 1324: 1318: 1317: 1305: 1259: 1257: 1256: 1251: 1249: 1248: 1233: 1232: 1204: 1202: 1201: 1196: 1184: 1182: 1181: 1176: 1158: 1156: 1155: 1150: 1148: 1147: 1132: 1131: 1130: 1126: 1124: 1123: 1114: 1103: 1085: 1083: 1082: 1077: 1062: 1060: 1059: 1054: 1042: 1040: 1039: 1034: 1029: 1004: 1002: 1001: 996: 991: 972: 970: 969: 964: 962: 957: 939: 937: 936: 931: 919: 917: 916: 911: 909: 905: 903: 889: 883: 882: 851: 849: 848: 843: 838: 837: 836: 823: 822: 814: 804: 802: 801: 796: 784: 782: 781: 776: 774: 773: 772: 755: 753: 752: 747: 745: 744: 736: 726: 724: 723: 718: 716: 690: 688: 687: 682: 664: 662: 661: 656: 635: 633: 632: 627: 622: 604: 602: 601: 596: 584: 582: 581: 576: 574: 573: 554: 552: 551: 546: 541: 523: 521: 520: 515: 498: 497: 485: 484: 468: 466: 465: 460: 378: 328: 322: 320: 319: 314: 303: 299: 298: 296: 273: 259: 258: 239: 227: 226: 225: 193:Artin's constant 182: 18:Artin L-function 1756: 1755: 1751: 1750: 1749: 1747: 1746: 1745: 1716: 1715: 1714: 1709: 1550: 1547: 1517: 1516: 1490: 1489: 1485: 1467: 1466: 1462: 1445: 1422: 1417: 1416: 1412: 1404: 1400:Moree, Pieter. 1399: 1398: 1391: 1369: 1368: 1364: 1326: 1325: 1321: 1307: 1306: 1302: 1297: 1269: 1240: 1224: 1207: 1206: 1187: 1186: 1161: 1160: 1115: 1104: 1098: 1093: 1088: 1087: 1068: 1067: 1045: 1044: 1017: 1016: 1013: 1006: 976: 975: 945: 944: 922: 921: 893: 884: 874: 854: 853: 828: 807: 806: 787: 786: 764: 758: 757: 729: 728: 693: 692: 667: 666: 638: 637: 607: 606: 587: 586: 565: 560: 559: 526: 525: 489: 476: 471: 470: 451: 450: 447: 442: 407: 405:Partial results 400: 374: 372: 356: 349: 324: 277: 265: 261: 204: 199: 198: 178: 172: 112: 102: 86: 21: 12: 11: 5: 1754: 1752: 1744: 1743: 1738: 1733: 1728: 1718: 1717: 1711: 1710: 1708: 1707: 1702: 1697: 1692: 1687: 1682: 1677: 1672: 1667: 1666: 1665: 1660: 1655: 1654: 1653: 1638: 1633: 1628: 1623: 1618: 1613: 1608: 1603: 1598: 1593: 1588: 1583: 1578: 1573: 1572: 1571: 1566: 1555: 1552: 1551: 1548: 1546: 1545: 1538: 1531: 1523: 1515: 1514: 1483: 1460: 1433:(2): 289–292. 1410: 1389: 1362: 1319: 1299: 1298: 1296: 1293: 1292: 1291: 1286: 1281: 1276: 1268: 1265: 1247: 1243: 1237: 1231: 1227: 1223: 1220: 1217: 1214: 1194: 1174: 1171: 1168: 1146: 1142: 1138: 1135: 1129: 1122: 1118: 1113: 1110: 1107: 1101: 1096: 1075: 1052: 1032: 1028: 1024: 1012: 1009: 994: 990: 986: 983: 961: 956: 952: 942: 929: 908: 902: 899: 896: 892: 887: 881: 877: 873: 870: 867: 864: 861: 852:, is given by 841: 835: 831: 826: 820: 817: 794: 771: 767: 742: 739: 715: 712: 708: 705: 700: 680: 677: 674: 654: 651: 648: 645: 625: 621: 617: 614: 594: 572: 568: 544: 540: 536: 533: 513: 510: 507: 504: 501: 496: 492: 488: 483: 479: 458: 446: 445:Elliptic curve 443: 441: 438: 406: 403: 398: 392: 391: 370: 355: 352: 347: 337: 336: 335: 334: 312: 309: 306: 302: 295: 292: 289: 286: 283: 280: 276: 271: 268: 264: 257: 254: 251: 248: 245: 238: 234: 230: 224: 221: 218: 215: 212: 207: 170: 156: 155:) is infinite. 110: 100: 85: 82: 44:primitive root 13: 10: 9: 6: 4: 3: 2: 1753: 1742: 1739: 1737: 1734: 1732: 1729: 1727: 1724: 1723: 1721: 1706: 1703: 1701: 1698: 1696: 1693: 1691: 1688: 1686: 1683: 1681: 1678: 1676: 1673: 1671: 1668: 1664: 1661: 1659: 1656: 1652: 1649: 1648: 1647: 1644: 1643: 1642: 1639: 1637: 1634: 1632: 1629: 1627: 1626:Firoozbakht's 1624: 1622: 1619: 1617: 1614: 1612: 1609: 1607: 1604: 1602: 1599: 1597: 1594: 1592: 1589: 1587: 1584: 1582: 1579: 1577: 1574: 1570: 1567: 1565: 1562: 1561: 1560: 1557: 1556: 1553: 1544: 1539: 1537: 1532: 1530: 1525: 1524: 1521: 1510: 1506: 1502: 1498: 1494: 1487: 1484: 1479: 1475: 1471: 1464: 1461: 1456: 1450: 1441: 1436: 1432: 1428: 1421: 1414: 1411: 1403: 1396: 1394: 1390: 1385: 1381: 1377: 1373: 1366: 1363: 1358: 1354: 1350: 1346: 1342: 1338: 1334: 1330: 1323: 1320: 1315: 1311: 1304: 1301: 1294: 1290: 1287: 1285: 1282: 1280: 1277: 1274: 1271: 1270: 1266: 1264: 1261: 1245: 1241: 1235: 1229: 1225: 1221: 1218: 1215: 1212: 1192: 1172: 1169: 1166: 1144: 1136: 1133: 1127: 1120: 1116: 1111: 1108: 1105: 1099: 1094: 1073: 1064: 1050: 1030: 1026: 1022: 1010: 1008: 981: 954: 950: 941: 927: 906: 900: 897: 894: 890: 885: 879: 875: 871: 865: 859: 815: 805:, denoted by 792: 737: 710: 706: 698: 678: 675: 672: 649: 643: 612: 592: 570: 566: 556: 531: 511: 508: 505: 502: 499: 494: 490: 486: 481: 477: 456: 444: 437: 435: 431: 427: 422: 420: 416: 412: 404: 402: 397: 389: 386: 385: 384: 382: 377: 369: 365: 361: 353: 351: 346: 342: 332: 327: 310: 307: 304: 300: 290: 287: 284: 278: 274: 269: 266: 262: 236: 232: 228: 205: 197: 196: 194: 190: 186: 181: 176: 169: 165: 164:perfect power 161: 157: 154: 150: 146: 142: 139: 138: 137: 135: 131: 127: 123: 119: 115: 109: 105: 99: 96: =  95: 91: 83: 81: 79: 75: 71: 66: 64: 60: 56: 52: 49: 45: 41: 40:square number 37: 34: 30: 26: 25:number theory 19: 1591:Bateman–Horn 1585: 1492: 1486: 1477: 1473: 1463: 1449:cite journal 1430: 1426: 1413: 1378:(1): 27–38. 1375: 1371: 1365: 1332: 1328: 1322: 1313: 1303: 1262: 1065: 1014: 1007: 557: 448: 433: 425: 423: 413:published a 408: 395: 393: 387: 367: 363: 359: 357: 344: 340: 338: 308:0.3739558136 192: 188: 167: 159: 152: 148: 144: 140: 133: 129: 125: 121: 117: 116:. Denote by 107: 103: 97: 93: 89: 87: 77: 74:Helmut Hasse 67: 50: 42:nor −1 is a 35: 28: 22: 1685:Oppermann's 1631:Gilbreath's 1601:Bunyakovsky 1043:of a prime 727:denoted by 665:of primes ( 191:and equals 114:square-free 84:Formulation 1720:Categories 1690:Polignac's 1663:Twin prime 1658:Legendre's 1646:Goldbach's 1576:Agoh–Giuga 1314:Numericana 1295:References 1011:Even order 323:(sequence 128:such that 70:Emil Artin 55:conjecture 1675:Lemoine's 1616:Dickson's 1596:Brocard's 1581:Andrica's 1509:121171472 1495:: 19–23. 1357:117943829 1216:≡ 1170:≥ 1109:− 1063:is even. 898:⁡ 872:∼ 819:¯ 741:¯ 676:≤ 469:given by 409:In 1967, 311:… 288:− 270:− 233:∏ 175:congruent 166:and that 162:is not a 1680:Mersenne 1611:CramĂ©r's 1480:: 13–44. 1267:See also 1134:≢ 63:rational 1636:Grimm's 1586:Artin's 1349:0207630 379:in the 376:A001122 354:Example 329:in the 326:A005596 183:in the 180:A085397 173:is not 33:integer 1507:  1355:  1347:  1159:where 240:  53:. The 48:primes 1695:PĂłlya 1505:S2CID 1423:(PDF) 1405:(PDF) 1353:S2CID 399:Artin 371:Artin 348:Artin 106:with 1651:weak 1455:link 1333:1967 1185:and 381:OEIS 331:OEIS 185:OEIS 88:Let 1569:2nd 1564:1st 1497:doi 1435:doi 1380:doi 1337:doi 1236:mod 1141:mod 895:log 785:in 707:mod 72:to 23:In 1722:: 1503:. 1478:58 1476:. 1472:. 1451:}} 1447:{{ 1431:83 1429:. 1425:. 1392:^ 1376:37 1374:. 1351:. 1345:MR 1343:. 1331:. 1312:. 1260:. 940:. 421:. 383:) 350:. 333:). 27:, 1542:e 1535:t 1528:v 1511:. 1499:: 1457:) 1443:. 1437:: 1407:. 1386:. 1382:: 1359:. 1339:: 1316:. 1246:j 1242:2 1230:j 1226:2 1222:+ 1219:1 1213:p 1193:j 1173:1 1167:j 1145:p 1137:1 1128:) 1121:j 1117:2 1112:1 1106:p 1100:( 1095:g 1074:g 1051:p 1031:p 1027:/ 1023:1 993:) 989:Q 985:( 982:E 960:Q 955:/ 951:E 928:P 907:) 901:x 891:x 886:( 880:E 876:C 869:) 866:P 863:( 860:N 840:) 834:p 830:F 825:( 816:E 793:E 770:p 766:F 738:P 714:) 711:p 704:( 699:P 679:x 673:p 653:) 650:P 647:( 644:N 624:) 620:Q 616:( 613:E 593:P 571:E 567:C 543:) 539:Q 535:( 532:E 512:b 509:+ 506:x 503:a 500:+ 495:3 491:x 487:= 482:2 478:y 457:E 434:p 426:a 396:C 388:S 368:C 364:p 360:a 345:C 341:a 305:= 301:) 294:) 291:1 285:p 282:( 279:p 275:1 267:1 263:( 256:e 253:m 250:i 247:r 244:p 237:p 229:= 223:n 220:i 217:t 214:r 211:A 206:C 189:a 171:0 168:a 160:a 153:a 151:( 149:S 145:a 143:( 141:S 134:p 130:a 126:p 122:a 120:( 118:S 111:0 108:a 104:b 101:0 98:a 94:a 90:a 78:a 51:p 36:a 20:.

Index

Artin L-function
number theory
integer
square number
primitive root
primes
conjecture
asymptotic density
rational
Emil Artin
Helmut Hasse
square-free
perfect power
congruent
A085397
OEIS
A005596
OEIS
A001122
OEIS
Christopher Hooley
conditional proof
generalized Riemann hypothesis
D. R. Heath-Brown
Stephens' constant
Brown–Zassenhaus conjecture
Full reptend prime
Cyclic number (group theory)
"Artin's Constant"
doi

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