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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
213761936840381779 ~1991
213762171710097379 ~1990
21376739427534798 ~1988
21377171427543438 ~1988
21377351427547038 ~1988
21377519427550398 ~1988
21377519243703716710
213775931282655599 ~1989
21377651427553038 ~1988
21377771427555438 ~1988
213779473848030479 ~1991
21378023427560478 ~1988
21378491427569838 ~1988
213785416413562319 ~1991
21379271106896355110 ~1992
21379283427585678 ~1988
21379703427594078 ~1988
21380039427600798 ~1988
21380171427603438 ~1988
21380423427608478 ~1988
213809232138092319 ~1990
213810835131459939 ~1991
213811611282869679 ~1989
21381383427627678 ~1988
21381539427630798 ~1988
Exponent Prime Factor Digits Year
21381791427635838 ~1988
213818235131637539 ~1991
213821811710574499 ~1990
21382331427646638 ~1988
21382499427649998 ~1988
21382859427657198 ~1988
21382871427657438 ~1988
21382919427658398 ~1988
21382943427658878 ~1988
21383363427667278 ~1988
21383651427673038 ~1988
21383723427674478 ~1988
21384299427685998 ~1988
21384479427689598 ~1988
21384743427694878 ~1988
21384791427695838 ~1988
21385103427702078 ~1988
21385139427702798 ~1988
21385163427703278 ~1988
213852073421633139 ~1990
213857571710860579 ~1990
21385823427716478 ~1988
21386147192475323110 ~1992
213862191710897539 ~1990
21386279427725598 ~1988
Exponent Prime Factor Digits Year
21386471427729438 ~1988
213865011283190079 ~1989
21386531427730638 ~1988
213867135132811139 ~1991
21387059427741198 ~1988
213884391711075139 ~1990
21388751427775038 ~1988
21388883427777678 ~1988
213895038983591279 ~1991
21389831427796638 ~1988
21390251427805038 ~1988
213904971711239779 ~1990
21390503427810078 ~1988
213906171711249379 ~1990
21391211427824238 ~1988
21391871427837438 ~1988
213919195134060579 ~1991
213919498128940639 ~1991
21392099427841998 ~1988
21392159427843198 ~1988
213922211283533279 ~1989
21392411427848238 ~1988
213924677273438799 ~1991
213926038984893279 ~1991
21392711427854238 ~1988
Exponent Prime Factor Digits Year
213929712139297119 ~1990
21393083427861678 ~1988
21393299427865998 ~1988
213934334706555279 ~1991
213935571711484579 ~1990
21394679427893598 ~1988
21395063427901278 ~1988
21395219427904398 ~1988
21395303427906078 ~1988
213955931283735599 ~1989
21395603427912078 ~1988
21395723427914478 ~1988
21395831427916638 ~1988
213961191711689539 ~1990
213962692995477679 ~1990
213964931283789599 ~1989
213964972995509599 ~1990
21396503427930078 ~1988
21397283427945678 ~1988
21397919427958398 ~1988
21398519427970398 ~1988
213987532580689611911 ~1995
21398999427979998 ~1988
21399011427980238 ~1988
21399239427984798 ~1988
1483
GIMPS The Prime Pages FactorDb.com
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25-07-08