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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
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
189467997957655599
18946919378938398 ~1988
189471411136828479 ~1989
189477171136863039 ~1989
18948311378966238 ~1988
18948383378967678 ~1988
Exponent Prime Factor Digits Year
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
18954263379085278 ~1988
189544971516359779 ~1989
18954839379096798 ~1988
18955463379109278 ~1988
18955619379112398 ~1988
189558011137348079 ~1989
Exponent Prime Factor Digits Year
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
189604671516837379 ~1989
18960563379211278 ~1988
18960857106180799310 ~1991
189611691516893539 ~1989
18961643379232878 ~1988
189624311896243119 ~1990
189624731137748399 ~1989
18963179379263598 ~1988
18963557147915744710 ~1992
189637611517100899 ~1989
Exponent Prime Factor Digits Year
18964691379293838 ~1988
18964931379298638 ~1988
189656474551755299 ~1990
18965789648629983910 ~1993
18966011379320238 ~1988
18966539379330798 ~1988
18967211379344238 ~1988
18967391379347838 ~1988
18967451379349038 ~1988
189676071517408579 ~1989
189682311517458499 ~1989
189685611517484899 ~1989
189690772655670799 ~1990
18969487292130099910 ~1992
18969803379396078 ~1988
189698771138192639 ~1989
18969959379399198 ~1988
189702292655832079 ~1990
18970739379414798 ~1988
18970811379416238 ~1988
18970943379418878 ~1988
189710092655941279 ~1990
18971599166950071310 ~1992
18971759379435198 ~1988
189722711897227119 ~1990
1377
GIMPS The Prime Pages FactorDb.com
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25-04-13