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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
398647673189181379 ~1992
39864959797299198 ~1990
39866243797324878 ~1990
39866471797329438 ~1990
398668612392011679 ~1992
39867911797358238 ~1990
398682073986820719 ~1992
39869099797381998 ~1990
39870251797405038 ~1990
398703673987036719 ~1992
39871187103665086310 ~1993
39871283797425678 ~1990
39871631797432638 ~1990
39875063797501278 ~1990
39876983797539678 ~1990
39877031797540638 ~1990
39878519797570398 ~1990
39878879797577598 ~1990
39879971797599438 ~1990
398831212392987279 ~1992
398839013190712099 ~1992
39886079797721598 ~1990
39886211797724238 ~1990
39887663797753278 ~1990
39888143797762878 ~1990
Exponent Prime Factor Digits Year
398894572393367439 ~1992
39889691797793838 ~1990
39889919797798398 ~1990
39890531797810638 ~1990
39891191797823838 ~1990
39892639446797556910 ~1995
398927473989274719 ~1992
39892823797856478 ~1990
39892991797859838 ~1990
39893389351061823310 ~1994
39894203797884078 ~1990
39894779797895598 ~1990
39894791797895838 ~1990
398955179574924099 ~1993
39896887422907002310 ~1995
39896963797939278 ~1990
398969932393819599 ~1992
398972412393834479 ~1992
39897443797948878 ~1990
39898151797963038 ~1990
39899003797980078 ~1990
398995212393971279 ~1992
39899939797998798 ~1990
39900719798014398 ~1990
39900743798014878 ~1990
Exponent Prime Factor Digits Year
39900863798017278 ~1990
39901271798025438 ~1990
39901391798027838 ~1990
399013913192111299
39901583798031678 ~1990
399019973192159779 ~1992
39902543798050878 ~1990
399046732394280399 ~1992
39904811798096238 ~1990
39905003798100078 ~1990
39905639798112798 ~1990
399057433990574319 ~1992
39905891798117838 ~1990
399067732394406399 ~1992
399085917183546399 ~1993
39909011798180238 ~1990
39909361119728083110 ~1993
399095532394573199 ~1992
39911999798239998 ~1990
39912479798249598 ~1990
39912839798256798 ~1990
399133013193064099 ~1992
39913871798277438 ~1990
39914311159657244110 ~1994
399143412394860479 ~1992
Exponent Prime Factor Digits Year
399148812394892879 ~1992
399169732395018399 ~1992
39918551798371038 ~1990
39919871798397438 ~1990
39920423798408478 ~1990
399210179581044099 ~1993
399235732395414399 ~1992
399236212395417279 ~1992
39924299798485998 ~1990
39925909287466544910 ~1994
399288172395729039 ~1992
39930563798611278 ~1990
39930983798619678 ~1990
39931163798623278 ~1990
399317572395905439 ~1992
39932257183688382310 ~1994
399338279584118499 ~1993
399345012396070079 ~1992
39935723798714478 ~1990
399366412396198479 ~1992
39937283798745678 ~1990
399381772396290639 ~1992
39938543798770878 ~1990
399395477189118479 ~1993
39940559798811198 ~1990
1905
GIMPS The Prime Pages FactorDb.com
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25-04-13