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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.
Exponent Prime Factor Digits Year
190417611142505679 ~1989
19041839380836798 ~1988
190418996093407699 ~1991
190422011142532079 ~1989
19042223380844478 ~1988
19042619380852398 ~1988
190427571142565439 ~1989
19042799380855998 ~1988
190430271523442179 ~1989
19043159380863198 ~1988
19043351380867038 ~1988
19043963380879278 ~1988
190445691523565539 ~1989
190447911523583299 ~1989
19045751380915038 ~1988
190457571142745439 ~1989
190461911904619119 ~1990
19046459380929198 ~1988
19047491380949838 ~1988
190476891523815139 ~1989
190477277619090819 ~1991
19047911380958238 ~1988
19049183380983678 ~1988
190494473428900479 ~1990
19049759380995198 ~1988
Exponent Prime Factor Digits Year
190498811142992879 ~1989
190500013048000179 ~1990
19050263381005278 ~1988
190505831905058319 ~1990
19050623381012478 ~1988
19051583381031678 ~1988
19051691381033838 ~1988
19051979381039598 ~1988
19052279381045598 ~1988
19052399381047998 ~1988
19052543381050878 ~1988
190528331143169999 ~1989
19053011381060238 ~1988
19053059381061198 ~1988
19053239381064798 ~1988
19054043381080878 ~1988
19054151381083038 ~1988
19055279381105598 ~1988
19055843381116878 ~1988
19056899381137998 ~1988
190572171524577379 ~1989
19057403381148078 ~1988
19057463381149278 ~1988
190576031905760319 ~1990
19057679381153598 ~1988
Exponent Prime Factor Digits Year
190577211143463279 ~1989
19057991381159838 ~1988
190581897242111839 ~1991
190582971143497839 ~1989
19058531381170638 ~1988
190596611143579679 ~1989
19059923381198478 ~1988
19060091381201838 ~1988
190604931143629599 ~1989
19060649194418619910 ~1992
19060703381214078 ~1988
19061039381220798 ~1988
19061099381221998 ~1988
19061113270667804710 ~1992
19061363381227278 ~1988
19061459381229198 ~1988
19062359381247198 ~1988
19062383381247678 ~1988
19062539381250798 ~1988
19062971381259438 ~1988
190632771143796639 ~1989
19064459381289198 ~1988
190646932669057039 ~1990
190652394575657379 ~1990
19065443381308878 ~1988
Exponent Prime Factor Digits Year
19065671381313438 ~1988
19066403381328078 ~1988
19066991381339838 ~1988
190670331144021999 ~1989
19067063381341278 ~1988
190671171144027039 ~1989
19067351381347038 ~1988
19067423381348478 ~1988
190676391525411139 ~1989
19067771381355438 ~1988
190678991906789919 ~1990
19068011381360238 ~1988
19068083381361678 ~1988
19068359381367198 ~1988
19068719381374398 ~1988
19068839381376798 ~1988
190688691525509539 ~1989
190689471525515779 ~1989
19069943381398878 ~1988
190701731144210399 ~1989
19070459381409198 ~1988
19071443381428878 ~1988
190715871525726979 ~1989
19071911381438238 ~1988
190719591525756739 ~1989
1395
GIMPS The Prime Pages FactorDb.com
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25-06-08