Home e-mail
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.
Exp. Prime Factor Digits Year
198163139632637 ~1980
1981649277430878 ~1982
1981699673777678 ~1983
1981853118911198 ~1981
1981883515289598 ~1983
1981891317102578 ~1982
1982011198201118 ~1982
198215939643197 ~1980
1982159158572738
1982203198220318 ~1982
1982381158590498 ~1982
1982401317184178 ~1982
1982467198246718 ~1982
198247139649437 ~1980
1982471158597698
198272339654477 ~1980
1982809475874178 ~1983
198289139657837 ~1980
1982891158631298
1982909277607278 ~1982
198295139659037 ~1980
19829692181265919 ~1984
1983019832867998 ~1983
1983383515679598 ~1983
1983491952075698 ~1984
Exp. Prime Factor Digits Year
19834936981895379 ~1986
198356339671277 ~1980
1983601436392238 ~1983
1983689753801838 ~1983
1983701119022078 ~1981
198374339674877 ~1980
1983749595124718 ~1983
1983833119029998 ~1981
1984007158720578 ~1982
1984061119043678 ~1981
198409139681837 ~1980
1984109158728738 ~1982
1984181119050878 ~1981
198427139685437 ~1980
1984343476242338 ~1983
1984399198439918 ~1982
19844291428788899 ~1984
1984753436645678 ~1983
19848171905424339 ~1984
1984859357274638 ~1983
19849212699492579 ~1985
198499139699837 ~1980
198505139701037 ~1980
1985057476413698 ~1983
1985239476457378 ~1983
Exp. Prime Factor Digits Year
1985293119117598 ~1981
1985293436764478
1985453476508738 ~1983
1985509476522178 ~1983
19855512223817139 ~1984
19855911588472819 ~1984
1985771635446738 ~1983
1985791357442398 ~1983
1985897158871778 ~1982
198593939718797 ~1980
1986001119160078 ~1981
1986067317770738 ~1982
1986133317781298 ~1982
1986421437012638 ~1983
1986437158914978 ~1982
1986577119194638 ~1981
198692339738477 ~1980
1986949476867778 ~1983
1987049596114718 ~1983
19870491589639219
1987151516659278 ~1983
1987201119232078 ~1981
1987241158979298 ~1982
1987277119236638 ~1981
1987339357721038 ~1983
Exp. Prime Factor Digits Year
1987411357733998 ~1983
19874811907981779 ~1984
198761939752397 ~1980
1987679159014338 ~1982
1987889159031138 ~1982
1988023834969678 ~1983
1988087159046978 ~1982
198818339763677 ~1980
198821939764397 ~1980
1988219159057538
1988251795300418 ~1983
1988263198826318 ~1982
1988291159063298 ~1982
198847139769437 ~1980
1988513119310798 ~1981
198853139770637 ~1980
1988561159084898 ~1982
198857939771597 ~1980
1988587318173938 ~1982
1988599357947838 ~1983
1988653119319198 ~1981
1988729755717038 ~1983
1988837278437198 ~1982
1988891994445518 ~1984
19888971074004399 ~1984
388
GIMPS The Prime Pages FactorDb.com
Home
5.142.307 digits 		e-mail
25-10-26