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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
12778691255573838 ~1986
12778993766739598 ~1988
127797071277970719 ~1988
12779831255596638 ~1986
12779939255598798 ~1986
127799535878778399 ~1990
12780197766811838 ~1988
12780539255610798 ~1986
12780611255612238 ~1986
12780731255614638 ~1986
12780877766852638 ~1988
12781541766892478 ~1988
127815411022523299
12781781766906878 ~1988
12781799255635998 ~1986
12781817766909038 ~1988
12781823255636478 ~1986
12781871255637438 ~1986
127822136902395039 ~1990
12782219255644398 ~1986
12782251398806231310 ~1992
12782873766972398 ~1988
12782879255657598 ~1986
127829931789619039 ~1989
127832175113286819 ~1990
Exponent Prime Factor Digits Year
12783383255667678 ~1986
127834973068039299 ~1989
127836471022691779 ~1988
12783839255676798 ~1986
12783973767038398 ~1988
12784091255681838 ~1986
12784379255687598 ~1986
12784643255692878 ~1986
127851891022815139 ~1988
12785653767139198 ~1988
12785681767140878 ~1988
12785777767146638 ~1988
12785939255718798 ~1986
12786311255726238 ~1986
12786479255729598 ~1986
12787319255746398 ~1986
12787409102299272110 ~1990
12787781767266878 ~1988
12788117767287038 ~1988
12788123255762478 ~1986
127883533836505919 ~1989
12788603255772078 ~1986
12788999255779998 ~1986
12789323255786478 ~1986
12789599255791998 ~1986
Exponent Prime Factor Digits Year
12789677767380638 ~1988
12789911255798238 ~1986
12790559255811198 ~1986
12790703255814078 ~1986
12790763255815278 ~1986
12790931255818638 ~1986
12790997767459838 ~1988
12791039255820798 ~1986
12791183255823678 ~1986
12791459255829198 ~1986
12791951255839038 ~1986
127920111023360899 ~1988
12792179255843598 ~1986
127921793070122979
12792337767540238 ~1988
12792431255848638 ~1986
12792803255856078 ~1986
12793283255865678 ~1986
127934091791077279 ~1989
12793463255869278 ~1986
12793691255873838 ~1986
12793751255875038 ~1986
12793871255877438 ~1986
12794051255881038 ~1986
127940716141154099 ~1990
Exponent Prime Factor Digits Year
127947015117880419 ~1990
12795131255902638 ~1986
12795617767737038 ~1988
12795677570687194310 ~1992
12796081767764878 ~1988
12796403255928078 ~1986
12797353767841198 ~1988
12797417767845038 ~1988
12798479255969598 ~1986
127988391023907139 ~1988
127992192303859439 ~1989
12799541767972478 ~1988
127997691791967679 ~1989
127998117167894179 ~1990
128002871280028719 ~1988
12800831256016638 ~1986
12801083256021678 ~1986
12801479256029598 ~1986
12801577768094638 ~1988
128016471024131779 ~1988
128018211024145699 ~1988
12801923256038478 ~1986
128021712048347379 ~1989
12802199256043998 ~1986
12802403256048078 ~1986
1142
GIMPS The Prime Pages FactorDb.com
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25-04-13