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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
218685291749482339 ~1990
21868571437371438 ~1988
21868631437372638 ~1988
218686315685844079
218686695248480579 ~1991
21869279437385598 ~1988
21869339437386798 ~1988
21869483437389678 ~1988
218696931312181599 ~1989
218697192186971919 ~1990
21870011437400238 ~1988
21870419437408398 ~1988
218707331312243999 ~1989
21870791437415838 ~1988
21871043437420878 ~1988
21871331437426638 ~1988
21872171437443438 ~1988
218723696999158099 ~1991
21872663437453278 ~1988
21872723437454478 ~1988
21872783437455678 ~1988
21872891437457838 ~1988
21873191437463838 ~1988
21873433100617791910 ~1992
21873539437470798 ~1988
Exponent Prime Factor Digits Year
218744091749952739 ~1990
21875123437502478 ~1988
21875291437505838 ~1988
21875303437506078 ~1988
21875363437507278 ~1988
21875699437513998 ~1988
21876143437522878 ~1988
21876779437535598 ~1988
21876983437539678 ~1988
21877319437546398 ~1988
21877799437555998 ~1988
218792693063097679 ~1990
218795531312773199 ~1989
21879743437594878 ~1988
21879899437597998 ~1988
218805411312832479 ~1989
21880583437611678 ~1988
218806973063297599 ~1990
21880763437615278 ~1988
218808471750467779 ~1990
21881039437620798 ~1988
21881063437621278 ~1988
21881557205686635910 ~1992
21882359437647198 ~1988
21882491437649838 ~1988
Exponent Prime Factor Digits Year
21882551437651038 ~1988
218825571312953439 ~1989
21882911437658238 ~1988
218829971312979839 ~1989
21883451437669038 ~1988
218836795252082979 ~1991
21883931437678638 ~1988
21884123437682478 ~1988
21884591437691838 ~1988
21884783437695678 ~1988
218849871750798979 ~1990
21885203437704078 ~1988
21885551437711038 ~1988
21886283437725678 ~1988
21886391437727838 ~1988
21886439437728798 ~1988
21886703437734078 ~1988
21886979437739598 ~1988
21887231437744638 ~1988
21887543437750878 ~1988
218879091751032739 ~1990
21888131437762638 ~1988
21888563437771278 ~1988
218888712188887119 ~1990
21889559437791198 ~1988
Exponent Prime Factor Digits Year
21889943437798878 ~1988
21890651437813038 ~1988
21890723437814478 ~1988
218907731313446399 ~1989
21891071437821438 ~1988
218913611313481679 ~1989
218914131313484799 ~1989
218914211313485279 ~1989
21892499437849998 ~1988
21892679437853598 ~1988
21892691437853838 ~1988
218931771751454179 ~1990
21893639437872798 ~1988
21893771437875438 ~1988
21894083437881678 ~1988
21894443437888878 ~1988
21894599437891998 ~1988
21894839437896798 ~1988
21894923437898478 ~1988
21895199437903998 ~1988
21895669118236612710 ~1992
21895883437917678 ~1988
21896411437928238 ~1988
218964771751718179 ~1990
21896639437932798 ~1988
1476
GIMPS The Prime Pages FactorDb.com
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25-04-13