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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
166378971331031779 ~1989
16638371332767438 ~1987
16638491332769838 ~1987
16638731332774638 ~1987
16639163332783278 ~1987
16639391332787838 ~1987
166394871331158979 ~1989
16639657998379438 ~1989
16640003332800078 ~1987
16640411332808238 ~1987
166404532329663439 ~1989
16640531332810638 ~1987
16640759332815198 ~1987
16641239332824798 ~1987
16641791332835838 ~1987
16642739332854798 ~1987
16642751332855038 ~1987
16642981998578878 ~1989
16643531332870638 ~1987
16643579332871598 ~1987
16644059332881198 ~1987
16644113998646798 ~1989
16644371332887438 ~1987
16644443332888878 ~1987
16644671332893438 ~1987
Exponent Prime Factor Digits Year
16644973998698398 ~1989
16645199332903998 ~1987
16645823332916478 ~1987
16646243332924878 ~1987
16646699332933998 ~1987
16646711332934238 ~1987
16646771332935438 ~1987
16647359332947198 ~1987
16647443332948878 ~1987
16647733998863998 ~1989
166477971331823779 ~1989
16648061998883678 ~1989
16648139332962798 ~1987
16648259332965198 ~1987
16648283332965678 ~1987
16648319332966398 ~1987
166491671664916719 ~1989
16649543332990878 ~1987
16649603332992078 ~1987
16649663332993278 ~1987
16650071333001438 ~1987
16650083333001678 ~1987
16650143333002878 ~1987
166509291332074339 ~1989
166512533996300739 ~1990
Exponent Prime Factor Digits Year
16651259333025198 ~1987
16651331333026638 ~1987
16651981999118878 ~1989
166521431665214319 ~1989
166528276661130819 ~1991
16653179333063598 ~1987
16653551333071038 ~1987
16654283333085678 ~1987
166544894996346719 ~1990
16654501999270078 ~1989
16655543333110878 ~1987
16656119333122398 ~1987
16656203333124078 ~1987
16656239333124798 ~1987
166563613664399439 ~1990
16656371333127438 ~1987
16656683333133678 ~1987
166569711332557699 ~1989
16657477999448638 ~1989
166574777995588979
16658783333175678 ~1987
16659353999561198 ~1989
166594812665516979 ~1990
16659491333189838 ~1987
16659563333191278 ~1987
Exponent Prime Factor Digits Year
166597072998747279 ~1990
16659743333194878 ~1987
16660151333203038 ~1987
16660439333208798 ~1987
16661363333227278 ~1987
16661531333230638 ~1987
16662011333240238 ~1987
16662203333244078 ~1987
166626374998791119 ~1990
16663033999781998 ~1989
16663103333262078 ~1987
16663271333265438 ~1987
16664057999843438 ~1989
166641613666115439 ~1990
166644114332746879 ~1990
16664801999888078 ~1989
166648071333184579 ~1989
16664831333296638 ~1987
16664933999895998 ~1989
16665371333307438 ~1987
16666319333326398 ~1987
16667291333345838 ~1987
16667699333353998 ~1987
166677731000066399 ~1989
16668419333368398 ~1987
1295
GIMPS The Prime Pages FactorDb.com
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25-04-13