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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
12173951243479038 ~1986
12174059243481198 ~1986
12174131243482638 ~1986
12174143243482878 ~1986
12174161730449678 ~1987
121741871217418719 ~1988
12174803243496078 ~1986
12175133730507998 ~1987
12175259243505198 ~1986
12175739243514798 ~1986
121757992191643839 ~1989
12176123243522478 ~1986
12176231243524638 ~1986
12176603243532078 ~1986
12177059243541198 ~1986
121774491704842879 ~1988
12177701974216098 ~1988
121780511217805119 ~1988
12178163243563278 ~1986
12178213730692798 ~1987
12178757730725438 ~1987
12179099243581998 ~1986
12179099974327938
12179243243584878 ~1986
121793033166618799 ~1989
Exponent Prime Factor Digits Year
12179677730780638 ~1987
12179819243596398 ~1986
12180173730810398 ~1987
121802831218028319 ~1988
12180599243611998 ~1986
12180671243613438 ~1986
12180683243613678 ~1986
121807034872281219 ~1989
12181391243627838 ~1986
12181577730894638 ~1987
12181837730910238 ~1987
12181957730917438 ~1987
121824191218241919 ~1988
121828392923881379 ~1989
12182903243658078 ~1986
12184241731054478 ~1987
12184391243687838 ~1986
12184477194951632110 ~1991
12184499243689998 ~1986
12184559243691198 ~1986
121847592193256639 ~1989
12184961974796898 ~1988
121851891705926479 ~1988
121853512193363199 ~1989
12185399243707998 ~1986
Exponent Prime Factor Digits Year
121854191218541919 ~1988
12185497731129838 ~1987
12185639243712798 ~1986
12186001731160078 ~1987
12186719243734398 ~1986
12186737974938978 ~1988
12186851243737038 ~1986
121868993899807699 ~1989
121869071218690719 ~1988
12187271243745438 ~1986
12187463243749278 ~1986
12187811243756238 ~1986
12188483243769678 ~1986
12188699975095938 ~1988
12188999975119938 ~1988
12189179243783598 ~1986
12189371243787438 ~1986
12189553731373198 ~1987
12189623243792478 ~1986
121897572925541699 ~1989
12189923243798478 ~1986
12190019975201538 ~1988
121901478045497039 ~1990
12190151243803038 ~1986
121903631219036319 ~1988
Exponent Prime Factor Digits Year
12190517975241378 ~1988
12190681731440878 ~1987
12190847975267778 ~1988
12191051243821038 ~1986
12191171243823438 ~1986
12191279243825598 ~1986
12191279975302338
12191423243828478 ~1986
12191831243836638 ~1986
12192359243847198 ~1986
12192611243852238 ~1986
121926438778702979 ~1990
121928337559556479 ~1990
12192857731571438 ~1987
12192923243858478 ~1986
12192959243859198 ~1986
12193081731584878 ~1987
12193451243869038 ~1986
12193661731619678 ~1987
12193823243876478 ~1986
12193931243878638 ~1986
12194183243883678 ~1986
12194411243888238 ~1986
12194939243898798 ~1986
121950771707310799 ~1988
1116
GIMPS The Prime Pages FactorDb.com
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25-04-13