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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
281575811689454879 ~1990
28157663563153278 ~1989
28158491563169838 ~1989
28159031563180638 ~1989
28159139563182798 ~1989
28159151563183038 ~1989
281596032815960319 ~1991
28160519563210398 ~1989
28160999563219998 ~1989
28161599563231998 ~1989
28161863563237278 ~1989
28162019563240398 ~1989
28162391563247838 ~1989
28163171563263438 ~1989
28163939563278798 ~1989
281644571689867439 ~1990
28164791563295838 ~1989
281648411689890479 ~1990
28164863563297278 ~1989
281658772253270179 ~1991
28166471563329438 ~1989
28166783563335678 ~1989
28166819563336398 ~1989
28167059563341198 ~1989
28167179563343598 ~1989
Exponent Prime Factor Digits Year
28167239563344798 ~1989
28167263563345278 ~1989
28167383563347678 ~1989
28167911563358238 ~1989
28168223563364478 ~1989
28168331563366638 ~1989
281686011690116079 ~1990
281686312253490499 ~1991
28168919563378398 ~1989
28169131473241400910 ~1994
28169231563384638 ~1989
28169243563384878 ~1989
28169363563387278 ~1989
28170119563402398 ~1989
28170743563414878 ~1989
281708171690249039 ~1990
281712074507393139 ~1991
28171463563429278 ~1989
28172471563449438 ~1989
28173011563460238 ~1989
28173251563465038 ~1989
28173791563475838 ~1989
28173851563477038 ~1989
281748293944476079 ~1991
28175183563503678 ~1989
Exponent Prime Factor Digits Year
28175639563512798 ~1989
28175891563517838 ~1989
28176119563522398 ~1989
28176611563532238 ~1989
28176839563536798 ~1989
281774693944845679 ~1991
28177739563554798 ~1989
281780714508491379 ~1991
28178291563565838 ~1989
281784412254275299 ~1991
281788331690729999 ~1990
28178963563579278 ~1989
28178999563579998 ~1989
28179323563586478 ~1989
281798211690789279 ~1990
281802531690815199 ~1990
28180319563606398 ~1989
281806872818068719 ~1991
28181099563621998 ~1989
281813171690879039 ~1990
28181399563627998 ~1989
28182191563643838 ~1989
28182431563648638 ~1989
28182839563656798 ~1989
28183079563661598 ~1989
Exponent Prime Factor Digits Year
28183091563661838 ~1989
28183163563663278 ~1989
281833696200341199 ~1992
28183451563669038 ~1989
28183559563671198 ~1989
28184003563680078 ~1989
281842371691054239 ~1990
28185011563700238 ~1989
28185119563702398 ~1989
28185203563704078 ~1989
28185299563705998 ~1989
28185431563708638 ~1989
28185743563714878 ~1989
28185791563715838 ~1989
28185803563716078 ~1989
28186079563721598 ~1989
28186271563725438 ~1989
28186583563731678 ~1989
281869131691214799 ~1990
28187171563743438 ~1989
28187699563753998 ~1989
28188119563762398 ~1989
281882392255059139 ~1991
28188911563778238 ~1989
28189019563780398 ~1989
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25-04-13