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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
210164691681317539 ~1990
21016739420334798 ~1988
21017063420341278 ~1988
21017099420341998 ~1988
210173271681386179 ~1990
21017351420347038 ~1988
210180797146146879 ~1991
21018323420366478 ~1988
210188211261129279 ~1989
21018839420376798 ~1988
21019151420383038 ~1988
21019283420385678 ~1988
21019331420386638 ~1988
21019571420391438 ~1988
21020231420404638 ~1988
21020339420406798 ~1988
210203391681627139
21020591420411838 ~1988
21020819420416398 ~1988
21021083420421678 ~1988
210211811261270879 ~1989
21021263420425278 ~1988
21021323420426478 ~1988
21021359420427198 ~1988
21021683420433678 ~1988
Exponent Prime Factor Digits Year
21021779420435598 ~1988
21022091420441838 ~1988
21022223420444478 ~1988
210223571261341439 ~1989
21022451420449038 ~1988
21023003420460078 ~1988
210231116727395539 ~1991
21023591420471838 ~1988
210240673363850739 ~1990
21024743420494878 ~1988
21025019420500398 ~1988
21025211420504238 ~1988
21025619420512398 ~1988
21025883420517678 ~1988
21026171420523438 ~1988
210266331261597999 ~1989
21026651420533038 ~1988
210268011577010075111 ~1994
210270777990289279 ~1991
21027323420546478 ~1988
210274491682195939 ~1990
21027683420553678 ~1988
21027791420555838 ~1988
21028211420564238 ~1988
21028391420567838 ~1988
Exponent Prime Factor Digits Year
21028919420578398 ~1988
21028979420579598 ~1988
21029399100941115310 ~1992
210312171682497379 ~1990
210312772944378799 ~1990
21031463420629278 ~1988
21031883420637678 ~1988
21032339420646798 ~1988
210325211261951279 ~1989
210326592103265919 ~1990
210326991682615939 ~1990
210329511682636099 ~1990
21033011420660238 ~1988
21033059420661198 ~1988
21033203420664078 ~1988
21033263420665278 ~1988
210337731262026399 ~1989
21034199420683998 ~1988
21034859420697198 ~1988
21035159420703198 ~1988
21035303420706078 ~1988
21035699420713998 ~1988
21036289151461280910 ~1992
21036299420725998 ~1988
210364131262184799 ~1989
Exponent Prime Factor Digits Year
21036563420731278 ~1988
21036611420732238 ~1988
21036637113597839910 ~1992
21036959420739198 ~1988
21037259420745198 ~1988
210375371262252239 ~1989
210376071683008579 ~1990
210377811683022499 ~1990
21038183420763678 ~1988
21038879420777598 ~1988
21038999420779998 ~1988
21039611420792238 ~1988
21039719420794398 ~1988
21040139420802798 ~1988
21040931420818638 ~1988
210412611262475679 ~1989
210412633366602099 ~1990
210413571683308579 ~1990
21041411420828238 ~1988
21041453231455983110 ~1992
21041519420830398 ~1988
210416771262500639 ~1989
21041771420835438 ~1988
210420171683361379 ~1990
210420971262525839 ~1989
1463
GIMPS The Prime Pages FactorDb.com
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25-06-08