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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
12180173730810398 ~1988
121802831218028319 ~1988
12180599243611998 ~1986
12180671243613438 ~1986
12180683243613678 ~1986
121807034872281219 ~1990
12181391243627838 ~1986
12181577730894638 ~1988
12181751974540098 ~1988
12181837730910238 ~1988
12181957730917438 ~1988
121824191218241919 ~1988
121828392923881379 ~1989
12182903243658078 ~1986
12183757731025438 ~1988
12183937731036238 ~1988
12184241731054478 ~1988
12184391243687838 ~1986
12184477194951632110 ~1991
12184499243689998 ~1986
12184559243691198 ~1986
121847592193256639 ~1989
12184961974796898 ~1988
121851891705926479 ~1988
121853512193363199 ~1989
Exponent Prime Factor Digits Year
12185399243707998 ~1986
121854191218541919 ~1988
12185497731129838 ~1988
12185639243712798 ~1986
12186001731160078 ~1988
12186101731166078 ~1988
12186719243734398 ~1986
12186737731204238 ~1988
12186737974938978
12186851243737038 ~1986
121868993899807699 ~1989
121869071218690719 ~1988
12187271243745438 ~1986
12187271974981698
12187463243749278 ~1986
121876031218760319 ~1988
12187811243756238 ~1986
12188017731281038 ~1988
12188257731295438 ~1988
121883471218834719 ~1988
12188483243769678 ~1986
12188699975095938 ~1988
12188941731336478 ~1988
12188999975119938 ~1988
12189179243783598 ~1986
Exponent Prime Factor Digits Year
12189371243787438 ~1986
12189553731373198 ~1988
12189623243792478 ~1986
121897572925541699 ~1989
12189923243798478 ~1986
12190019975201538 ~1988
121901478045497039 ~1990
12190151243803038 ~1986
121903631219036319 ~1988
12190517975241378 ~1988
12190681731440878 ~1988
12190847975267778 ~1988
12191051243821038 ~1986
12191171243823438 ~1986
12191279243825598 ~1986
12191279975302338
12191423243828478 ~1986
12191831243836638 ~1986
12192359243847198 ~1986
12192611243852238 ~1986
121926438778702979 ~1990
12192833731569998 ~1988
121928337559556479
12192857731571438 ~1988
12192923243858478 ~1986
Exponent Prime Factor Digits Year
12192959243859198 ~1986
12193081731584878 ~1988
12193141731588478 ~1988
12193451243869038 ~1986
12193661731619678 ~1988
12193823243876478 ~1986
12193931243878638 ~1986
12194183243883678 ~1986
12194411243888238 ~1986
12194939243898798 ~1986
121950771707310799 ~1988
12195301731718078 ~1988
121953615609866079 ~1990
12195553731733198 ~1988
12195719243914398 ~1986
12195779243915598 ~1986
12196031243920638 ~1986
121966192195391439 ~1989
12196637731798238 ~1988
121969493659084719 ~1989
12197051243941038 ~1986
12197231243944638 ~1986
12197519243950398 ~1986
12197593731855598 ~1988
121978511219785119 ~1988
1188
GIMPS The Prime Pages FactorDb.com
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26-04-05