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Small Mersenne Prime Factors
Prime numbers of the form Mp= 2p − 1 are called Mersenne primes. For Mp to be prime, p must also be prime.
Any factor q of a Mersenne number 2p − 1 must be of the form 2kp + 1, where integer k ≥ 0. Furthermore, q must be 1 or 7 mod 8.
Exp. Prime Factor Digits Year
4059439730699038 ~1985
40594433247554419 ~1987
405968381193677 ~1983
4059953243597198 ~1984
406001981200397 ~1983
4060207730837278 ~1985
4060337974480898 ~1985
406037981207597 ~1983
406040381208077 ~1983
4060487730887678 ~1985
406069181213837 ~1983
4060747649719538 ~1985
4060967324877378 ~1984
4061081243664878 ~1984
4061177324894178 ~1984
4061461893521438 ~1985
40614892924272099 ~1986
4061621243697278 ~1984
406166381233277 ~1983
4061669324933538 ~1984
4061803406180318 ~1984
4061921324953698 ~1984
4061923406192318 ~1984
4062077243724638 ~1984
406208381241677 ~1983
Exp. Prime Factor Digits Year
40621271381123199 ~1986
4062161243729678 ~1984
4062221324977698 ~1984
406225181245037 ~1983
406241981248397 ~1983
406243181248637 ~1983
406249181249837 ~1983
4062533243751998 ~1984
4062547731258478 ~1985
4062551325004098 ~1984
40626311706305039 ~1986
406265981253197 ~1983
406267181253437 ~1983
4062673243760398 ~1984
4062701243762078 ~1984
406279181255837 ~1983
406291181258237 ~1983
4063127325050178 ~1984
4063181243790878 ~1984
406321181264237 ~1983
4063273243796398 ~1984
4063487731427678 ~1985
4063517243811038 ~1984
4063601243816078 ~1984
4063603406360318 ~1984
Exp. Prime Factor Digits Year
4063781325102498 ~1984
4063793568931038 ~1985
406385981277197 ~1983
4063859325108738
4063877243832638 ~1984
40639095852028979 ~1987
406393181278637 ~1983
4064023650243698 ~1985
4064237243854238 ~1984
4064299406429918 ~1984
4064311731575998 ~1985
4064407650305138 ~1985
4064477325158178 ~1984
4064477569026798
406451981290397 ~1983
4064519325161538
4064681325174498 ~1984
40648311056856079 ~1985
4065001243900078 ~1984
4065073243904398 ~1984
4065571731802798 ~1985
406573181314637 ~1983
40657313659157919
4065857569219998 ~1985
406637981327597 ~1983
Exp. Prime Factor Digits Year
4066379325310338
4066661243999678 ~1984
406669181333837 ~1983
4066709325336738 ~1984
4066759406675918 ~1984
40667891220036719 ~1986
4066981244018878 ~1984
4067027976086498 ~1985
4067039732067038 ~1985
4067207325376578 ~1984
4067257650761138 ~1985
4067263406726318 ~1984
4067291325383298 ~1984
406736381347277 ~1983
4067489569448478 ~1985
406757981351597 ~1983
4067597244055838 ~1984
406763981352797 ~1983
4067737244064238 ~1984
406796381359277 ~1983
4067971650875378 ~1985
4068041325443298 ~1984
40682712359597199 ~1986
4068343650934898 ~1985
406850381370077 ~1983
623
GIMPS The Prime Pages FactorDb.com
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26-04-05