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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.
Exp. Prime Factor Digits Year
7979567638365378 ~1986
7979771638381698 ~1986
7979891638391298 ~1986
79801211276819379 ~1987
7980179159603598 ~1985
7980239638419138 ~1986
7980443159608878 ~1985
79806291117288079 ~1987
7980683159613678 ~1985
7980911159618238 ~1985
79810871276973939 ~1987
7981283159625678 ~1985
7981481478888878 ~1986
7981553478893198 ~1986
7981817478909038 ~1986
79818471436732479 ~1987
7981937638554978 ~1986
7982141478928478 ~1986
79821412554285139
7982153478929198 ~1986
7982203798220318 ~1987
79825673831632179 ~1988
7982651159653038 ~1985
7982969638637538 ~1986
7983037478982238 ~1986
Exp. Prime Factor Digits Year
7983119159662398 ~1985
7983179159663598 ~1985
79833012394990319 ~1988
7983449638675938 ~1986
7983539159670798 ~1985
7983551159671038 ~1985
7983571798357118 ~1987
7983797479027838 ~1986
7983851159677038 ~1985
79842612395278319 ~1988
7984331159686638 ~1985
7984583159691678 ~1985
7984673479080398 ~1986
7984793479087598 ~1986
79848914631236799 ~1988
7984957166087105710 ~1990
7985123159702478 ~1985
7985413479124798 ~1986
7985489638839138 ~1986
7985641479138478 ~1986
7986317638905378 ~1986
7986371159727438 ~1985
7986599638927938 ~1986
79866593354396799 ~1988
79867311437611599 ~1987
Exp. Prime Factor Digits Year
7986739798673918 ~1987
7987019159740398 ~1985
7987037479222238 ~1986
7987241638979298 ~1986
79873731118232239 ~1987
7987403159748078 ~1985
7987559159751198 ~1985
7987751159755038 ~1985
7988063159761278 ~1985
7988339159766798 ~1985
79884592556306899 ~1988
7988573479314398 ~1986
79885791437944239 ~1987
79887131278194099 ~1987
7988723159774478 ~1985
7988801639104098 ~1986
7989011159780238 ~1985
7989071159781438 ~1985
7989419639153538 ~1986
7989491159789838 ~1985
79894931917478339 ~1988
7990001479400078 ~1986
7990259159805198 ~1985
79904711278475379 ~1987
7990471103876123110
Exp. Prime Factor Digits Year
7990919159818398 ~1985
7991057639284578 ~1986
7991099159821998 ~1985
7991471159829438 ~1985
7991531159830638 ~1985
79915311438475599
7991573479494398 ~1986
7991747639339778 ~1986
7991891159837838 ~1985
7991941479516478 ~1986
7991981639358498 ~1986
7992059159841198 ~1985
7992251639380098 ~1986
7992869639429538 ~1986
7992923159858478 ~1985
7993061479583678 ~1986
7993103159862078 ~1985
7993211639456898 ~1986
79932112557827539
7993283159865678 ~1985
7993697479621838 ~1986
7993801479628078 ~1986
7993871639509698 ~1986
7993883159877678 ~1985
7993957479637438 ~1986
929
GIMPS The Prime Pages FactorDb.com
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26-02-08