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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
249880995997143779 ~1991
24988559499771198 ~1989
24988571499771438 ~1989
249886273998180339 ~1991
24988871499777438 ~1989
249889611999116899 ~1990
24990071499801438 ~1989
249901512499015119 ~1990
249907039996281219 ~1992
24991091499821838 ~1989
249913671999309379 ~1990
24991619499832398 ~1989
24991679499833598 ~1989
24991727119960289710 ~1992
24991979499839598 ~1989
249920592499205919 ~1990
24992183499843678 ~1989
24992351499847038 ~1989
249923931499543599 ~1990
24992483499849678 ~1989
24992557134959807910 ~1992
24993131499862638 ~1989
249940195998564579 ~1991
24995111499902238 ~1989
24995471499909438 ~1989
Exponent Prime Factor Digits Year
249962712499627119 ~1990
24996551499931038 ~1989
24996971499939438 ~1989
24997859499957198 ~1989
24998399499967998 ~1989
249985733499800239 ~1991
24998843499976878 ~1989
249990771499944639 ~1990
24999083499981678 ~1989
24999731499994638 ~1989
250000331500001999 ~1990
25000691500013838 ~1989
25001783500035678 ~1989
250018331500109999 ~1990
250019811500118879 ~1990
25002083500041678 ~1989
25002179500043598 ~1989
25002443500048878 ~1989
25002779500055598 ~1989
25003799500075998 ~1989
25004411500088238 ~1989
25004459500089198 ~1989
250045577501367119 ~1992
25004939500098798 ~1989
25005131500102638 ~1989
Exponent Prime Factor Digits Year
25005191500103838 ~1989
250053531500321199 ~1990
250055832500558319 ~1990
250058896001413379 ~1991
250060971500365839 ~1990
250065912500659119 ~1990
25007159500143198 ~1989
25007711500154238 ~1989
25008323500166478 ~1989
25008551500171038 ~1989
25008611500172238 ~1989
25008803500176078 ~1989
25009511500190238 ~1989
25009811500196238 ~1989
250101912501019119 ~1990
25010351500207038 ~1989
25010663140059712910 ~1992
25011023500220478 ~1989
25011263500225278 ~1989
25011323500226478 ~1989
25011671500233438 ~1989
25011719500234398 ~1989
25011911500238238 ~1989
25012271500245438 ~1989
25012451500249038 ~1989
Exponent Prime Factor Digits Year
25012679500253598 ~1989
250135872501358719 ~1990
25013759500275198 ~1989
25013951500279038 ~1989
25015103500302078 ~1989
25015103105063432710
250162272501622719 ~1990
25016399500327998 ~1989
25016423500328478 ~1989
25016471500329438 ~1989
25016903500338078 ~1989
25016923100067692110 ~1992
25017911500358238 ~1989
25017983500359678 ~1989
250181872001454979 ~1990
250184174002946739 ~1991
25018501120088804910 ~1992
250189011501134079 ~1990
250206472001651779 ~1990
25020731500414638 ~1989
25021019500420398 ~1989
25021511500430238 ~1989
250220092001760739 ~1990
25022531500450638 ~1989
25023083500461678 ~1989
1574
GIMPS The Prime Pages FactorDb.com
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25-04-13