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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.
Exp. Prime Factor Digits Year
8984879179697598 ~1985
8984957718796578 ~1987
8985023179700478 ~1985
8985161718812898 ~1987
89852111617337999 ~1988
8985241539114478 ~1986
8985253539115198 ~1986
89853071437649139 ~1988
89855175750730899 ~1989
8986091179721838 ~1985
8986151179723038 ~1985
8986199179723998 ~1985
8986277539176638 ~1986
8986283179725678 ~1985
8986379718910338 ~1987
8986391179727838 ~1985
8986751179735038 ~1985
8986801539208078 ~1986
8986841539210478 ~1986
8986933539215998 ~1986
89869873594794819 ~1988
8987197539231838 ~1986
8987243179744878 ~1985
89874491977238799 ~1988
89874494313975539
Exp. Prime Factor Digits Year
8987519179750398 ~1985
8987567719005378 ~1987
8987591179751838 ~1985
8987621539257278 ~1986
8988131179762638 ~1985
8988191179763838 ~1985
8988437539306238 ~1986
8988437719074978
8988557719084578 ~1987
8988613539316798 ~1986
8988839179776798 ~1985
8988877539332638 ~1986
8988989719119138 ~1987
8989199719135938 ~1987
8989237539354238 ~1986
8989499179789998 ~1985
8989621539377278 ~1986
89896911618144399 ~1988
8989763179795278 ~1985
8990039719203138 ~1987
89900411977809039 ~1988
8990153539409198 ~1986
8990257539415438 ~1986
8990411719232898 ~1987
8990563899056318 ~1987
Exp. Prime Factor Digits Year
8990777539446638 ~1986
8990843179816878 ~1985
8991197539471838 ~1986
8991239179824798 ~1985
8991347719307778 ~1987
89913474495673519
8991371179827438 ~1985
8991743179834878 ~1985
8991901539514078 ~1986
8992019179840398 ~1985
8992211719376898 ~1987
89922591618606639 ~1988
8992283179845678 ~1985
8992499179849998 ~1985
8992499719399938
8992769719421538 ~1987
8992811179856238 ~1985
8992937539576238 ~1986
8993011899301118 ~1987
8993267719461378 ~1987
8993297539597838 ~1986
8993333539599998 ~1986
899344710966609271912 ~1995
8993471719477698 ~1987
8993723179874478 ~1985
Exp. Prime Factor Digits Year
8993737539624238 ~1986
8993861719508898 ~1987
89938691978651199 ~1988
8993951179879038 ~1985
8993981719518498 ~1987
8994473539668398 ~1986
8994497719559778 ~1987
89945931259243039 ~1987
8994659179893198 ~1985
89946771259254799 ~1987
8994911179898238 ~1985
8995109719608738 ~1987
8995163179903278 ~1985
8995391179907838 ~1985
8995583179911678 ~1985
8995751179915038 ~1985
8995799179915998 ~1985
8995801539748078 ~1986
8995837539750238 ~1986
89959571439353139 ~1988
8996327719706178 ~1987
8996539899653918 ~1987
8996579179931598 ~1985
8996639179932798 ~1985
89966514318392499 ~1989
996
GIMPS The Prime Pages FactorDb.com
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26-02-08