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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
21246551424931038 ~1988
212467811274806879 ~1989
21247151424943038 ~1988
212473191699785539 ~1990
21248231424964638 ~1988
21248651424973038 ~1988
21248663424973278 ~1988
21248819424976398 ~1988
21249731424994638 ~1988
21249863424997278 ~1988
21250511425010238 ~1988
212510533400168499 ~1990
212516895100405379 ~1991
21251903425038078 ~1988
21252239425044798 ~1988
21252551425051038 ~1988
21252971425059438 ~1988
21253019425060398 ~1988
212533611700268899 ~1990
21253499425069998 ~1988
212536971275221839 ~1989
21253871425077438 ~1988
21254171425083438 ~1988
21254279425085598 ~1988
21254399425087998 ~1988
Exponent Prime Factor Digits Year
21254903425098078 ~1988
212550771700406179 ~1990
21255203425104078 ~1988
21255263425105278 ~1988
21256283425125678 ~1988
21256379425127598 ~1988
21256751425135038 ~1988
21256799425135998 ~1988
212568131275408799 ~1989
212575211275451279 ~1989
21257699425153998 ~1988
212578576377357119 ~1991
21258059425161198 ~1988
21258983425179678 ~1988
212599671700797379 ~1990
21260279425205598 ~1988
212619715528112479 ~1991
212625411275752479 ~1989
21262883425257678 ~1988
212629993827339839 ~1991
21263171425263438 ~1988
21263279425265598 ~1988
21263579425271598 ~1988
21263663425273278 ~1988
212637312126373119 ~1990
Exponent Prime Factor Digits Year
212637971275827839 ~1989
212643913402302579 ~1990
21264563425291278 ~1988
21264851425297038 ~1988
21265043425300878 ~1988
212650512126505119 ~1990
21265943425318878 ~1988
21266603425332078 ~1988
21266891425337838 ~1988
21266951425339038 ~1988
212670792126707919 ~1990
21267791425355838 ~1988
212678232126782319 ~1990
212679971276079839 ~1989
21268151425363038 ~1988
212682496380474719 ~1991
21268259425365198 ~1988
21268631425372638 ~1988
21269639425392798 ~1988
212697131276182799 ~1989
21269879425397598 ~1988
21269903425398078 ~1988
21270971425419438 ~1988
21271259425425198 ~1988
212712591701700739
Exponent Prime Factor Digits Year
21271643425432878 ~1988
21271931425438638 ~1988
21272099425441998 ~1988
21272291425445838 ~1988
21272483425449678 ~1988
21272579425451598 ~1988
21273503425470078 ~1988
21273611425472238 ~1988
21274031425480638 ~1988
212740675531257439 ~1991
212741331276447999 ~1989
212741931276451599 ~1989
21274283425485678 ~1988
21274343425486878 ~1988
212743992127439919 ~1990
212744391701955139 ~1990
21274763425495278 ~1988
212752033404032499 ~1990
212752811276516879 ~1989
21275399425507998 ~1988
21275651425513038 ~1988
21275711425514238 ~1988
212757471702059779 ~1990
21276071425521438 ~1988
21276263425525278 ~1988
1471
GIMPS The Prime Pages FactorDb.com
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25-06-08