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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
20485463409709278 ~1988
20485499409709998 ~1988
20485511409710238 ~1988
20486051409721038 ~1988
20486519409730398 ~1988
20486831409736638 ~1988
20487119409742398 ~1988
20487371114729277710 ~1992
20487563409751278 ~1988
20488057245856684110 ~1992
20488103409762078 ~1988
20488463409769278 ~1988
204886512048865119 ~1990
20488763409775278 ~1988
20488943409778878 ~1988
20489099409781998 ~1988
20489531409790638 ~1988
20489663409793278 ~1988
204900771229404639 ~1989
20490191409803838 ~1988
20490551409811038 ~1988
20491343409826878 ~1988
20491571409831438 ~1988
20491739409834798 ~1988
204920713278731379 ~1990
Exponent Prime Factor Digits Year
20492651409853038 ~1988
204930433278886899 ~1990
204936771639494179 ~1990
204936771524729568911
20493719409874398 ~1988
204947171229683039 ~1989
20494763409895278 ~1988
20495339409906798 ~1988
20495963409919278 ~1988
204960971229765839 ~1989
20496263409925278 ~1988
204966131229796799 ~1989
20496683409933678 ~1988
20496803409936078 ~1988
204968113689425999 ~1990
204969131229814799 ~1989
20496923409938478 ~1988
20497271409945438 ~1988
204973633279578099 ~1990
20497391409947838 ~1988
204975794919418979 ~1991
20497811409956238 ~1988
20497859409957198 ~1988
20498459409969198 ~1988
20498903409978078 ~1988
Exponent Prime Factor Digits Year
204990011229940079 ~1989
20499023409980478 ~1988
20499179409983598 ~1988
20499431409988638 ~1988
20500163410003278 ~1988
205004233280067699 ~1990
20500643410012878 ~1988
20500871410017438 ~1988
20501471410029438 ~1988
20501543410030878 ~1988
20501699410033998 ~1988
20502071410041438 ~1988
205030731230184399 ~1989
205031931230191599 ~1989
205032711640261699 ~1990
20503523410070478 ~1988
20505599410111998 ~1988
20505623410112478 ~1988
205059171230355039 ~1989
20505923410118478 ~1988
20506043410120878 ~1988
205060931230365599 ~1989
20506151410123038 ~1988
20506331410126638 ~1988
205063491640507939 ~1990
Exponent Prime Factor Digits Year
20506631410132638 ~1988
20506943410138878 ~1988
20507699410153998 ~1988
20507891410157838 ~1988
20508041324027047910 ~1993
20508431410168638 ~1988
20508503410170078 ~1988
205085178203406819 ~1991
20509271410185438 ~1988
20509763410195278 ~1988
20510159410203198 ~1988
20510459410209198 ~1988
20510531410210638 ~1988
20510663410213278 ~1988
205109991640879939 ~1990
205112511640900099 ~1990
20511923410238478 ~1988
205122432051224319 ~1990
205122534922940739 ~1991
205123211230739279 ~1989
20512391410247838 ~1988
20512403410248078 ~1988
20513011229745723310 ~1992
20513039410260798 ~1988
20513231410264638 ~1988
1488
GIMPS The Prime Pages FactorDb.com
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25-11-17