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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
6480191129603838 ~1984
6480233388813998 ~1985
6480359129607198 ~1984
6480421388825278 ~1985
64809311036948979 ~1986
6480959129619198 ~1984
6480997388859838 ~1985
6481219648121918 ~1986
6481303648130318 ~1986
6481571129631438 ~1984
6481619518529538 ~1986
6481873388912398 ~1985
64821295185703219 ~1988
6482521388951278 ~1985
6482537518602978 ~1986
6482579129651598 ~1984
6482741388964478 ~1985
64827673760004879 ~1988
6482783129655678 ~1984
6482891129657838 ~1984
6482891518631298
6483011518640898 ~1986
6483053388983198 ~1985
64831091426283999 ~1987
6483563129671278 ~1984
Exp. Prime Factor Digits Year
6483761518700898 ~1986
64837931556110339 ~1987
64838033241901519 ~1988
6483833389029998 ~1985
6483839129676798 ~1984
6483941518715298 ~1986
6484063648406318 ~1986
6484319129686398 ~1984
6484343129686878 ~1984
6484433389065998 ~1985
6484561389073678 ~1985
6484901389094078 ~1985
6485207518816578 ~1986
6485243129704878 ~1984
6485291129705838 ~1984
6485461389127678 ~1985
6485543129710878 ~1984
64858673113216179 ~1988
6485987518878978 ~1986
6486131129722638 ~1984
6486377389182638 ~1985
6486377518910178
6486479129729598 ~1984
6486751648675118 ~1986
6486899145306537710 ~1989
Exp. Prime Factor Digits Year
6486929518954338 ~1986
6487001389220078 ~1985
6487301518984098 ~1986
6487751129755038 ~1984
6487763129755278 ~1984
6487919519033538 ~1986
6487991129759838 ~1984
6488137389288238 ~1985
6488333389299998 ~1985
64887671038202739 ~1986
6488939129778798 ~1984
6488971648897118 ~1986
6489293389357598 ~1985
6489491129789838 ~1984
6489551129791038 ~1984
6489863129797278 ~1984
6490031519202498 ~1986
6490313389418798 ~1985
6490391129807838 ~1984
6491189908766478 ~1986
64913338698386239 ~1989
6491417519313378 ~1986
6491477389488638 ~1985
6491759129835198 ~1984
6491867519349378 ~1986
Exp. Prime Factor Digits Year
6492383129847678 ~1984
6492449519395938 ~1986
6492611129852238 ~1984
6492677389560638 ~1985
6493139129862798 ~1984
6493261389595678 ~1985
6493493389609598 ~1985
6493493190908694310
6493819649381918 ~1986
6493909112994016710 ~1989
6494177389650638 ~1985
6494273909198238 ~1986
6494339519547138 ~1986
6494417389665038 ~1985
6494821389689278 ~1985
6494921389695278 ~1985
6495011519600898 ~1986
6495079649507918 ~1986
6495323129906478 ~1984
6495563129911278 ~1984
64956671169220079 ~1987
6495737519658978 ~1986
64959434677078979 ~1988
6496079129921598 ~1984
64961231559069539 ~1987
797
GIMPS The Prime Pages FactorDb.com
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25-06-01