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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
41938751838775038 ~1991
419388074193880719 ~1992
41939291838785838 ~1991
419401612516409679 ~1992
41940383838807678 ~1991
41940599838811998 ~1991
41941463838829278 ~1991
41941943838838878 ~1991
41942123838842478 ~1991
41942591838851838 ~1991
41942819838856398 ~1991
41942951838859038 ~1991
41943491838869838 ~1991
41943623838872478 ~1991
41943971838879438 ~1991
419444517550001199 ~1993
419445372516672239 ~1992
419456412516738479 ~1992
41945903838918078 ~1991
419461874194618719 ~1992
41947583838951678 ~1991
41947679838953598 ~1991
41947739838954798 ~1991
41947799838955998 ~1991
419480572516883439 ~1992
Exponent Prime Factor Digits Year
41948303838966078 ~1991
41948411838968238 ~1991
41948591838971838 ~1991
41948771838975438 ~1991
419492412516954479 ~1992
41949419838988398 ~1991
41949431838988638 ~1991
41949443838988878 ~1991
41949503838990078 ~1991
41950319839006398 ~1991
41950439839008798 ~1991
41951879839037598 ~1991
41951963839039278 ~1991
41952359839047198 ~1991
41952611839052238 ~1991
41952803839056078 ~1991
419529732517178399 ~1992
41953031839060638 ~1991
41953139839062798 ~1991
41953559839071198 ~1991
41954303839086078 ~1991
41954543839090878 ~1991
41954999839099998 ~1991
41955191839103838 ~1991
419557372517344239 ~1992
Exponent Prime Factor Digits Year
41956319839126398 ~1991
41956451839129038 ~1991
41956643839132878 ~1991
41957159839143198 ~1991
41957183839143678 ~1991
41958073226573594310 ~1994
41958491839169838 ~1991
41958503839170078 ~1991
41958599839171998 ~1991
41959019839180398 ~1991
41959811839196238 ~1991
41960351839207038 ~1991
41960591839211838 ~1991
41961539839230798 ~1991
41961599839231998 ~1991
41961779839235598 ~1991
41961791839235838 ~1991
41962049134278556910 ~1994
41962163839243278 ~1991
41962619839252398 ~1991
41962631839252638 ~1991
41963279839265598 ~1991
419636532517819199 ~1992
41963711839274238 ~1991
419645412517872479 ~1992
Exponent Prime Factor Digits Year
419646172517877039 ~1992
41964683839293678 ~1991
41965799839315998 ~1991
41965991839319838 ~1991
41966063839321278 ~1991
41966819839336398 ~1991
41967059839341198 ~1991
419686731913771488911 ~1996
41968763839375278 ~1991
41969051839381038 ~1991
41969099839381998 ~1991
41969171839383438 ~1991
41969639839392798 ~1991
41970479839409598 ~1991
41970899839417998 ~1991
419712612518275679 ~1992
41971271839425438 ~1991
41971739839434798 ~1991
41971763839435278 ~1991
41972123839442478 ~1991
41972219839444398 ~1991
41973359839467198 ~1991
419735213357881699 ~1992
419739413357915299 ~1992
41974259839485198 ~1991
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