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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
319853771919122639 ~1991
31985903639718078 ~1990
31986371639727438 ~1990
31987451639749038 ~1990
31988639639772798 ~1990
319891371919348239 ~1991
31991423639828478 ~1990
31991471639829438 ~1990
319918792559350339 ~1991
31992791639855838 ~1990
319929592559436739 ~1991
31993259639865198 ~1990
31993679639873598 ~1990
319941172559529379 ~1991
319949531919697199 ~1991
31995839639916798 ~1990
319963372559706979 ~1991
31996403639928078 ~1990
319970931919825599 ~1991
31997183639943678 ~1990
31998143639962878 ~1990
31998779639975598 ~1990
319990131919940799 ~1991
31999199639983998 ~1990
319992771919956639 ~1991
Exponent Prime Factor Digits Year
31999403639988078 ~1990
319996192559969539 ~1991
31999631639992638 ~1990
31999829767995896110 ~1995
32000651640013038 ~1990
32002163640043278 ~1990
32002991640059838 ~1990
32005691640113838 ~1990
320059931920359599 ~1991
320063475121015539 ~1992
32007263640145278 ~1990
32007491640149838 ~1990
320079011920474079 ~1991
32008043640160878 ~1990
32008871640177438 ~1990
32010743640214878 ~1990
32011079640221598 ~1990
32011103640222078 ~1990
32011151640223038 ~1990
32011211640224238 ~1990
320113611920681679 ~1991
32012483640249678 ~1990
32012639640252798 ~1990
32012671665863556910 ~1995
32012999640259998 ~1990
Exponent Prime Factor Digits Year
32014739640294798 ~1990
32015051640301038 ~1990
32015891640317838 ~1990
32016791313764551910 ~1994
320178011921068079 ~1991
32018699640373998 ~1990
320192835123085299 ~1992
32019863640397278 ~1990
320204331921225999 ~1991
320204473202044719 ~1991
32021351640427038 ~1990
32022671640453438 ~1990
32023451640469038 ~1990
32023811640476238 ~1990
32024543640490878 ~1990
32025419640508398 ~1990
320258811921552879 ~1991
32026139640522798 ~1990
32027003640540078 ~1990
32027291640545838 ~1990
320279211921675279 ~1991
320280131921680799 ~1991
320291571921749439 ~1991
32029643640592878 ~1990
32030591640611838 ~1990
Exponent Prime Factor Digits Year
32030879640617598 ~1990
32031563640631278 ~1990
320322411921934479 ~1991
320323731921942399 ~1991
32032621531741508710 ~1994
32032823640656478 ~1990
32032919640658398 ~1990
32032943640658878 ~1990
320340531922043199 ~1991
32034143640682878 ~1990
32036003640720078 ~1990
32037311640746238 ~1990
32038859640777198 ~1990
32038943640778878 ~1990
32039159640783198 ~1990
320395633203956319 ~1991
320398372563186979 ~1991
320401312563210499 ~1991
320406411922438479 ~1991
32040839640816798 ~1990
320416371922498239 ~1991
320420833204208319 ~1991
32042663640853278 ~1990
320435113204351119 ~1991
320440912563527299 ~1991
1778
GIMPS The Prime Pages FactorDb.com
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25-04-13