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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
691108431382216879 ~1992
691169339676370639 ~1994
691179775529438179 ~1994
691186311382372639 ~1992
691202631382405279 ~1992
691207134147242799 ~1993
691214991382429999 ~1992
691219311382438639 ~1992
691222379677113199 ~1994
691223695529789539 ~1994
691238414147430479 ~1993
691276795530214339 ~1994
691277391382554799 ~1992
691279014147674079 ~1993
69128581110605729710 ~1994
691308711382617439 ~1992
691309311382618639 ~1992
691309911382619839 ~1992
691328934147973599 ~1993
691339191382678399 ~1992
691341831382683679 ~1992
691353591382707199 ~1992
691361031382722079 ~1992
69137399124447318310 ~1995
691387311382774639 ~1992
Exponent Prime Factor Digits Year
691391511382783039 ~1992
691399911382799839 ~1992
691406511382813039 ~1992
691410711382821439 ~1992
691437711382875439 ~1992
691444791382889599 ~1992
691489014148934079 ~1993
691500831383001679 ~1992
691524374149146239 ~1993
691565391383130799 ~1992
691586414149518479 ~1993
691593711383187439 ~1992
691598031383196079 ~1992
69160739124489330310 ~1995
691639431383278879 ~1992
691658695533269539 ~1994
69166883221334025710 ~1995
69167921221337347310 ~1995
691699791383399599 ~1992
691702191383404399 ~1992
691709991383419999 ~1992
691724031383448079 ~1992
691732195533857539 ~1994
691732311383464639 ~1992
691737115533896899 ~1994
Exponent Prime Factor Digits Year
691739476917394719 ~1994
691739991383479999 ~1992
69174319124513774310 ~1995
691749711383499439 ~1992
691805631383611279 ~1992
691809591383619199 ~1992
691810191383620399 ~1992
691826939685577039 ~1994
691838534151031199 ~1993
691839231383678479 ~1992
691846311383692639 ~1992
691854711383709439 ~1992
691860374151162239 ~1993
691866711383733439 ~1992
691869591383739199 ~1992
691869831383739679 ~1992
691874391383748799 ~1992
691882276918822719 ~1994
69189011345945055110 ~1996
691960191383920399 ~1992
691965591383931199 ~1992
691970031383940079 ~1992
691995231383990479 ~1992
692116791384233599 ~1992
69213943276855772110 ~1995
Exponent Prime Factor Digits Year
692141631384283279 ~1992
692145591384291199 ~1992
692168391384336799 ~1992
692195991384391999 ~1992
692209191384418399 ~1992
692217231384434479 ~1992
692244231384488479 ~1992
69228773166149055310 ~1995
692290311384580639 ~1992
692332911384665839 ~1992
692336031384672079 ~1992
692347791384695599 ~1992
692371911384743839 ~1992
692380791384761599 ~1992
692391711384783439 ~1992
692403231384806479 ~1992
692410191384820399 ~1992
692411031384822079 ~1992
692440134154640799 ~1993
692465031384930079 ~1992
692527791385055599 ~1992
692543511385087039 ~1992
692554431385108879 ~1992
692557134155342799 ~1993
692558991385117999 ~1992
2227
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25-05-04