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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
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
28190497383390759310 ~1994
Exponent Prime Factor Digits Year
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
28198211563964238 ~1989
Exponent Prime Factor Digits Year
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
28205783564115678 ~1989
Exponent Prime Factor Digits Year
28205819564116398 ~1989
28206131564122638 ~1989
282064492256515939 ~1991
28206539564130798 ~1989
282076931692461599 ~1990
282083811692502879 ~1990
28208723564174478 ~1989
28208951564179038 ~1989
28209683564193678 ~1989
282097931692587599 ~1990
28210163564203278 ~1989
28210571564211438 ~1989
28210727411876614310 ~1994
28211759564235198 ~1989
28212251564245038 ~1989
28212491564249838 ~1989
28212791564255838 ~1989
28213343564266878 ~1989
28213511564270238 ~1989
28213799564275998 ~1989
282139493949952879 ~1991
282146336771511939 ~1992
282149333950090639 ~1991
28215179564303598 ~1989
28215431564308638 ~1989
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25-06-08