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Lemoine's conjecture

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in 2008 states that all odd integers greater than 3 can be represented as the sum of a prime number and the product of two consecutive positive integers (
624: 479: 189:, the conjecture has been verified by Corbitt up to 10. A blog post in June of 2019 additionally claimed to have verified the conjecture up to 10. 462: 427: 457: 598: 514: 420: 452: 619: 406: 544: 131: 484: 262: 519: 593: 469: 578: 524: 504: 142:
For example, the odd integer 47 can be expressed as the sum of a prime and a semiprime in four different ways:
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Agama, Theophilus; Gensel, Berndt (21 March 2021). "A Proof of Lemoine's Conjecture by Circles of Partition".
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John O. Kiltinen and Peter B. Young, "Goldbach, Lemoine, and a Know/Don't Know Problem",
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A proof was claimed in 2017 by Agama and Gensel, but this was later found to be flawed.
385: 177:. Lemoine's conjecture is that this sequence contains no zeros after the first three. 17: 613: 402: 228: 28: 52: 83: 48: 76: 44: 233: 186: 72: 56: 412: 380: 354: 290: 372: 346: 249: 151: 416: 130:> 2. The Lemoine conjecture is similar to but stronger than 154: 248:
Sun, Zhi-Wei. "On sums of primes and triangular numbers."
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sequence A046927 (Number of ways to express 2
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greater than 5 can be represented as the sum of an odd
333:L. Hodges, "A lesser-known Goldbach conjecture", 150:The number of ways this can be done is given by 146:47 = 13 + 2Ă—17 = 37 + 2Ă—5 = 41 + 2Ă—3 = 43 + 2Ă—2. 428: 8: 219: 217: 71:in 1895, but was erroneously attributed by 435: 421: 413: 289: 263:"Lemoine's Conjecture Verified to 10^10" 213: 323:H. Levy, "On Goldbach's Conjecture", 7: 202:Lemoine's conjecture and extensions 630:Unsolved problems in number theory 392:New York: Springer-Verlag 2004: C1 390:Unsolved Problems in Number Theory 25: 310:L'intermĂ©diare des mathĂ©maticiens 118:always has a solution in primes 625:Conjectures about prime numbers 367:(4) (Sep., 1985), pp. 195–203. 126:(not necessarily distinct) for 407:Wolfram Demonstrations Project 250:arXiv preprint arXiv:0803.3737 79:who pondered it in the 1960s. 1: 67:The conjecture was posed by 646: 132:Goldbach's weak conjecture 106:To put it algebraically, 2 448: 443:Prime number conjectures 82:A similar conjecture by 594:Schinzel's hypothesis H 620:Additive number theory 18:Levy's conjecture 599:Waring's prime number 405:by Jay Warendorff, 361:Mathematics Magazine 33:Lemoine's conjecture 564:Legendre's constant 229:"Levy's Conjecture" 515:Elliott–Halberstam 500:Chinese hypothesis 316:(1894), 179; ibid 226:Weisstein, Eric W. 47:, states that all 607: 606: 535:Landau's problems 403:Levy's Conjecture 102:Formal definition 41:Levy's conjecture 16:(Redirected from 637: 453:Hardy–Littlewood 437: 430: 423: 414: 296: 295: 293: 281: 275: 274: 272: 270: 259: 253: 246: 240: 239: 238: 221: 153: 39:, also known as 21: 645: 644: 640: 639: 638: 636: 635: 634: 610: 609: 608: 603: 444: 441: 399: 373:10.2307/2689513 347:10.2307/2690477 341:(1993): 45–47. 308:Emile Lemoine, 305: 300: 299: 283: 282: 278: 268: 266: 261: 260: 256: 247: 243: 224: 223: 222: 215: 210: 198: 183: 140: 104: 65: 23: 22: 15: 12: 11: 5: 643: 641: 633: 632: 627: 622: 612: 611: 605: 604: 602: 601: 596: 591: 586: 581: 576: 571: 566: 561: 560: 559: 554: 549: 548: 547: 532: 527: 522: 517: 512: 507: 502: 497: 492: 487: 482: 477: 472: 467: 466: 465: 460: 449: 446: 445: 442: 440: 439: 432: 425: 417: 411: 410: 398: 397:External links 395: 394: 393: 386:Richard K. Guy 383: 357: 331: 321: 304: 301: 298: 297: 276: 265:. 19 June 2019 254: 241: 212: 211: 209: 206: 205: 204: 197: 194: 182: 179: 148: 147: 139: 136: 103: 100: 64: 61: 35:, named after 24: 14: 13: 10: 9: 6: 4: 3: 2: 642: 631: 628: 626: 623: 621: 618: 617: 615: 600: 597: 595: 592: 590: 587: 585: 582: 580: 577: 575: 572: 570: 567: 565: 562: 558: 555: 553: 550: 546: 543: 542: 541: 538: 537: 536: 533: 531: 528: 526: 523: 521: 520:Firoozbakht's 518: 516: 513: 511: 508: 506: 503: 501: 498: 496: 493: 491: 488: 486: 483: 481: 478: 476: 473: 471: 468: 464: 461: 459: 456: 455: 454: 451: 450: 447: 438: 433: 431: 426: 424: 419: 418: 415: 408: 404: 401: 400: 396: 391: 387: 384: 382: 378: 374: 370: 366: 362: 358: 356: 352: 348: 344: 340: 336: 332: 329: 326: 322: 319: 315: 311: 307: 306: 302: 292: 287: 280: 277: 264: 258: 255: 251: 245: 242: 236: 235: 230: 227: 220: 218: 214: 207: 203: 200: 199: 195: 193: 190: 188: 185:According to 180: 178: 176: 174: 170: 166: 162: 158: 145: 144: 143: 137: 135: 133: 129: 125: 121: 117: 113: 109: 101: 99: 97: 93: 89: 85: 80: 78: 74: 70: 69:Émile Lemoine 62: 60: 58: 54: 50: 46: 42: 38: 37:Émile Lemoine 34: 30: 29:number theory 19: 568: 485:Bateman–Horn 389: 364: 360: 338: 334: 327: 324: 320:(1896), 151. 317: 313: 309: 291:1709.05335v6 279: 267:. Retrieved 257: 244: 232: 191: 184: 172: 168: 164: 160: 156: 149: 141: 127: 123: 119: 115: 111: 107: 105: 95: 91: 87: 81: 66: 55:and an even 53:prime number 49:odd integers 40: 32: 26: 579:Oppermann's 525:Gilbreath's 495:Bunyakovsky 330:(1963): 274 175:are primes) 614:Categories 584:Polignac's 557:Twin prime 552:Legendre's 540:Goldbach's 470:Agoh–Giuga 335:Math. Mag. 325:Math. Gaz. 303:References 77:Hyman Levy 45:Hyman Levy 569:Lemoine's 510:Dickson's 490:Brocard's 475:Andrica's 234:MathWorld 187:MathWorld 73:MathWorld 57:semiprime 574:Mersenne 505:CramĂ©r's 196:See also 181:Evidence 43:, after 530:Grimm's 480:Artin's 381:2689513 355:2690477 269:19 June 252:(2008). 138:Example 98:+1) ). 63:History 379:  353:  167:where 159:+1 as 110:+ 1 = 589:PĂłlya 377:JSTOR 351:JSTOR 286:arXiv 208:Notes 545:weak 271:2019 171:and 152:OEIS 122:and 463:2nd 458:1st 369:doi 343:doi 114:+ 2 84:Sun 75:to 59:. 27:In 616:: 388:, 375:. 365:58 363:, 349:. 339:66 337:, 328:47 312:, 231:. 216:^ 163:+2 134:. 31:, 436:e 429:t 422:v 409:. 371:: 345:: 318:3 314:1 294:. 288:: 273:. 237:. 173:q 169:p 165:q 161:p 157:n 128:n 124:q 120:p 116:q 112:p 108:n 96:x 94:( 92:x 90:+ 88:p 20:)

Index

Levy's conjecture
number theory
Émile Lemoine
Hyman Levy
odd integers
prime number
semiprime
Émile Lemoine
MathWorld
Hyman Levy
Sun
Goldbach's weak conjecture
sequence A046927 (Number of ways to express 2n+1 as p+2q where p and q are primes)
MathWorld
Lemoine's conjecture and extensions


Weisstein, Eric W.
"Levy's Conjecture"
MathWorld
arXiv preprint arXiv:0803.3737
"Lemoine's Conjecture Verified to 10^10"
arXiv
1709.05335v6
doi
10.2307/2690477
JSTOR
2690477
doi
10.2307/2689513

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