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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
199513131197078799 ~1989
199518371197110239 ~1989
19952351399047038 ~1988
19952519399050398 ~1988
19952591399051838 ~1988
199528931197173599 ~1989
19953179399063598 ~1988
19953383399067678 ~1988
19954043399080878 ~1988
19954163399083278 ~1988
19954223399084478 ~1988
19954283399085678 ~1988
19954439399088798 ~1988
19954619399092398 ~1988
199550572793707999 ~1990
19955231399104638 ~1988
19955711399114238 ~1988
19955759399115198 ~1988
19955843399116878 ~1988
199560433192966899 ~1990
19956179399123598 ~1988
199566411596531299 ~1989
199570334390547279 ~1991
19957079399141598 ~1988
199570793592274239
Exponent Prime Factor Digits Year
19957103399142078 ~1988
19957523399150478 ~1988
19957523207558239310
199581171197487039 ~1989
19958219399164398 ~1988
19959083399181678 ~1988
19959311399186238 ~1988
199595091596760739 ~1989
19960043399200878 ~1988
19960211399204238 ~1988
199603094391267999 ~1991
199603191596825539 ~1989
19960403399208078 ~1988
19960799399215998 ~1988
19961003399220078 ~1988
19961099399221998 ~1988
199611891596895139 ~1989
19961351399227038 ~1988
19961471399229438 ~1988
199616811596934499 ~1989
199619171197715039 ~1989
19961939399238798 ~1988
199625811597006499 ~1989
199631211197787279 ~1989
19963259399265198 ~1988
Exponent Prime Factor Digits Year
199632771197796639 ~1989
19963871399277438 ~1988
199640811197844879 ~1989
19964159399283198 ~1988
199646771197880639 ~1989
19964999399299998 ~1988
19965443399308878 ~1988
199656899583530739 ~1991
19966031399320638 ~1988
19966091399321838 ~1988
199666571197999439 ~1989
19966811399336238 ~1988
199668111597344899
19966811143761039310
19966931399338638 ~1988
19967303399346078 ~1988
199673571198041439 ~1989
19967411399348238 ~1988
19967459399349198 ~1988
19967483399349678 ~1988
19968671399373438 ~1988
19968719399374398 ~1988
199687199984359519
199687319584990899 ~1991
19968779399375598 ~1988
Exponent Prime Factor Digits Year
199694932795729039 ~1990
19969511399390238 ~1988
199697696390326099 ~1991
19969979399399598 ~1988
199700571597604579 ~1989
199702971198217839 ~1989
19970459399409198 ~1988
19970999399419998 ~1988
19971599399431998 ~1988
19971683399433678 ~1988
19972019399440398 ~1988
19972079399441598 ~1988
19972259399445198 ~1988
19972523399450478 ~1988
199729131198374799 ~1989
19973059143806024910 ~1992
199730711997307119 ~1990
19973171399463438 ~1988
19973231399464638 ~1988
19973483399469678 ~1988
199735732796300239 ~1990
199735811198414879 ~1989
19973711399474238 ~1988
199741971597935779 ~1989
19974299399485998 ~1988
1498
GIMPS The Prime Pages FactorDb.com
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26-03-08