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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
189322191514577539 ~1989
189322615679678319 ~1991
18932471378649438 ~1988
18932579378651598 ~1988
189327171135963039 ~1989
189327291514618339 ~1989
189327411514619299 ~1989
18933539378670798 ~1988
18934463378689278 ~1988
18935291378705838 ~1988
189353831893538319 ~1990
18936311378726238 ~1988
189366011136196079 ~1989
18936611378732238 ~1988
189367671514941379 ~1989
18937571378751438 ~1988
18937703378754078 ~1988
18937799378755998 ~1988
18937871378757438 ~1988
18938063378761278 ~1988
189384771136308639 ~1989
18938879378777598 ~1988
18939443378788878 ~1988
18939491378789838 ~1988
18939863378797278 ~1988
Exponent Prime Factor Digits Year
18939983378799678 ~1988
18940931378818638 ~1988
189414772651806799 ~1990
18941999378839998 ~1988
18942083378841678 ~1988
18942251378845038 ~1988
18942851378857038 ~1988
18943079378861598 ~1988
18943103378862078 ~1988
18943871378877438 ~1988
18943937106086047310 ~1991
189439571136637439 ~1989
18944039378880798 ~1988
18944063378881278 ~1988
189442011136652079 ~1989
18944231378884638 ~1988
18944591378891838 ~1988
189446211515569699 ~1989
18944759378895198 ~1988
189449271515594179 ~1989
18945659378913198 ~1988
18946643378932878 ~1988
18946751378935038 ~1988
189467771136806639 ~1989
18946799378935998 ~1988
Exponent Prime Factor Digits Year
189467997957655599
18946919378938398 ~1988
189471411136828479 ~1989
189477171136863039 ~1989
18948311378966238 ~1988
18948383378967678 ~1988
18948563378971278 ~1988
189491571136949439 ~1989
189494571136967439 ~1989
18949531337301651910 ~1993
189496393410935039 ~1990
18949751378995038 ~1988
189498671894986719 ~1990
189501171137007039 ~1989
189502731137016399 ~1989
18950279379005598 ~1988
18950339379006798 ~1988
18951671379033438 ~1988
18951743379034878 ~1988
189520971137125839 ~1989
18952403379048078 ~1988
18952799379055998 ~1988
18953639379072798 ~1988
189540171516321379 ~1989
18954203379084078 ~1988
Exponent Prime Factor Digits Year
18954263379085278 ~1988
189544971516359779 ~1989
18954839379096798 ~1988
18955463379109278 ~1988
18955619379112398 ~1988
189558011137348079 ~1989
189564611137387679 ~1989
18956579379131598 ~1988
18956711379134238 ~1988
18956771379135438 ~1988
18956831379136638 ~1988
18957131379142638 ~1988
189577211137463279 ~1989
18957863379157278 ~1988
18958091379161838 ~1988
18958151379163038 ~1988
18958991379179838 ~1988
18959051379181038 ~1988
18959123379182478 ~1988
18959483379189678 ~1988
189596394550313379 ~1990
189601331137607999 ~1989
189604671516837379 ~1989
18960563379211278 ~1988
18960857106180799310 ~1991
1399
GIMPS The Prime Pages FactorDb.com
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25-07-08