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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
28177739563554798 ~1989
281780714508491379 ~1991
28178291563565838 ~1989
281784412254275299 ~1991
281788331690729999 ~1990
28178963563579278 ~1989
28178999563579998 ~1989
28179323563586478 ~1989
281798211690789279 ~1990
281802531690815199 ~1990
28180319563606398 ~1989
281806872818068719 ~1991
281809131690854799 ~1990
28181099563621998 ~1989
281813171690879039 ~1990
28181399563627998 ~1989
28182191563643838 ~1989
28182431563648638 ~1989
28182839563656798 ~1989
28183079563661598 ~1989
28183091563661838 ~1989
28183163563663278 ~1989
281833696200341199 ~1992
28183451563669038 ~1989
28183559563671198 ~1989
Exponent Prime Factor Digits Year
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
28189223563784478 ~1989
281894092255152739 ~1991
281897171691383039 ~1990
28190231563804638 ~1989
28190339563806798 ~1989
Exponent Prime Factor Digits Year
28190497383390759310 ~1994
28190579563811598 ~1989
28190891563817838 ~1989
28191599563831998 ~1989
28192331563846638 ~1989
28192403563848078 ~1989
281926011691556079 ~1990
281931412255451299 ~1991
28193579563871598 ~1989
28193591563871838 ~1989
281936571691619439 ~1990
281937171691623039 ~1990
28194563563891278 ~1989
28195283563905678 ~1989
28195319563906398 ~1989
281954571691727439 ~1990
28195883563917678 ~1989
281962811939904132911 ~1995
28196783563935678 ~1989
28197131563942638 ~1989
28197359563947198 ~1989
28197371563947438 ~1989
28197503563950078 ~1989
28197623563952478 ~1989
28197971563959438 ~1989
Exponent Prime Factor Digits Year
28198211563964238 ~1989
28198763563975278 ~1989
28198799563975998 ~1989
28200143564002878 ~1989
28200779564015598 ~1989
28200923564018478 ~1989
28201331564026638 ~1989
282015976768383299 ~1992
282019399588659279 ~1992
28202159564043198 ~1989
28202183564043678 ~1989
28202351564047038 ~1989
28202411564048238 ~1989
28202771564055438 ~1989
282030531692183199 ~1990
28203179564063598 ~1989
28203503564070078 ~1989
28203599564071998 ~1989
28203611564072238 ~1989
28203803564076078 ~1989
28204019564080398 ~1989
28204439564088798 ~1989
28204703564094078 ~1989
282050174512802739 ~1991
282053272256426179 ~1991
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25-05-04