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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
8720171174403438 ~1985
8720189697615138 ~1987
8720311872031118 ~1987
8720483174409678 ~1985
8720533523231998 ~1986
8721029697682338 ~1987
87211013314018399 ~1988
8721239174424798 ~1985
8721239697699138
87216073488642819 ~1988
8721749137803634310 ~1990
87217631395482099 ~1987
8721913523314798 ~1986
8722097523325838 ~1986
8722211697776898 ~1987
8722409697792738 ~1987
8722607697808578 ~1987
8722799174455998 ~1985
8722859697828738 ~1987
8723063174461278 ~1985
8723213523392798 ~1986
8723321697865698 ~1987
8723441523406478 ~1986
8723459697876738 ~1987
8723531174470638 ~1985
Exp. Prime Factor Digits Year
8723789697903138 ~1987
8723993523439598 ~1986
8724143174482878 ~1985
8724479697958338 ~1987
8724641523478478 ~1986
8724721523483278 ~1986
8725091174501838 ~1985
8725177523510638 ~1986
8725217523513038 ~1986
8725217698017378
8725421698033698 ~1987
87254892094117379 ~1988
8725511174510238 ~1985
87256212617686319 ~1988
8725631174512638 ~1985
8725823174516478 ~1985
8726351174527038 ~1985
8727053523623198 ~1986
8727161698172898 ~1987
8727263174545278 ~1985
87273431396374899 ~1987
87273432967296639
87283032967623039 ~1988
87284271571116879 ~1988
8728679174573598 ~1985
Exp. Prime Factor Digits Year
8728757523725438 ~1986
8728823174576478 ~1985
87289691920373199 ~1988
8729183174583678 ~1985
8729291174585838 ~1985
8729317523759038 ~1986
8729411174588238 ~1985
8729429698354338 ~1987
8729543174590878 ~1985
8729563872956318 ~1987
8729711698376898 ~1987
8729821523789278 ~1986
8730083174601678 ~1985
87303311396852979 ~1987
8730983174619678 ~1985
8731031174620638 ~1985
8731139698491138 ~1987
8731531873153118 ~1987
8731939873193918 ~1987
87319391571749039
8732051174641038 ~1985
8732093523925598 ~1986
8732201523932078 ~1986
8732261523935678 ~1986
8732351698588098 ~1987
Exp. Prime Factor Digits Year
8732489698599138 ~1987
8732653523959198 ~1986
8732819174656398 ~1985
8732819698625538
8732879174657598 ~1985
8733083174661678 ~1985
8733251174665038 ~1985
87332593493303619 ~1988
8733541524012478 ~1986
87335477685521379 ~1989
8733551174671038 ~1985
8733743174674878 ~1985
8733839174676798 ~1985
8734223174684478 ~1985
8734841524090478 ~1986
8734919174698398 ~1985
87353412620602319 ~1988
8735429698834338 ~1987
8735621524137278 ~1986
8735711174714238 ~1985
8735849698867938 ~1987
8736179174723598 ~1985
8736263174725278 ~1985
8736659174733198 ~1985
8736719174734398 ~1985
982
GIMPS The Prime Pages FactorDb.com
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26-03-08