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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
128309925661997 ~1979
1283099230957838
128333925666797 ~1979
1283389693030078 ~1982
1283441102675298 ~1980
12834411411785119
1283521282374638 ~1981
128353777012237 ~1980
1283537693109998
1283549102683938 ~1980
1283563205370098 ~1981
1283731847262478 ~1982
128375925675197 ~1979
128387925677597 ~1979
128393925678797 ~1979
1284007744724078 ~1982
128413125682637 ~1979
1284293410973778 ~1982
128431777059037 ~1980
1284329109681696710 ~1985
1284487513794818 ~1982
1284511205521778 ~1981
128455125691037 ~1979
1284583128458318 ~1980
128460177076077 ~1980
Exp. Prime Factor Digits Year
1284601513840418
128471377082797 ~1980
128484177090477 ~1980
1284847128484718 ~1980
1284847308363298
1284863308367138 ~1981
1284901513960418 ~1982
1284931128493118 ~1980
128497125699437 ~1979
1284991231298398 ~1981
1285051128505118 ~1980
128518177110877 ~1980
1285237205637938 ~1981
1285259102820738 ~1980
128545125709037 ~1979
1285481102838498 ~1980
12855134293613439 ~1984
1285633514253218 ~1982
128579925715997 ~1979
128598177158877 ~1980
128601777161037 ~1980
128603925720797 ~1979
1286071128607118 ~1980
128609377165597 ~1980
1286267720309538 ~1982
Exp. Prime Factor Digits Year
1286273180078238 ~1981
128630325726077 ~1979
128639925727997 ~1979
1286581591827278 ~1982
1286669617601138 ~1982
128671125734237 ~1979
128677377206397 ~1980
12867771415454719 ~1983
12867978029613299 ~1985
1286833514733218 ~1982
128683777210237 ~1980
12869411003813999 ~1983
1286969308872578 ~1981
128706177223677 ~1980
128715777229437 ~1980
1287329695157678 ~1982
1287431102994498 ~1980
12874676797825779 ~1985
128747925749597 ~1979
128749125749837 ~1979
1287499540749598 ~1982
1287511128751118 ~1980
1287613309027138 ~1981
128762325752477 ~1979
128774325754877 ~1979
Exp. Prime Factor Digits Year
1287743643871518
128776177265677 ~1980
128784177270477 ~1980
128789925757997 ~1979
12878991648510739
128798325759677 ~1979
1287989103039138 ~1980
1287989798553198
128803377281997 ~1980
1288117206098738 ~1981
1288117618296178
1288213592577998 ~1982
128836177301677 ~1980
1288361103068898
128843925768797 ~1979
1288543438104638 ~1982
128864325772877 ~1979
128879925775997 ~1979
1288829103106338 ~1980
1288829412425298
1288919232005438 ~1981
1288921206227378 ~1981
128921377352797 ~1980
128923125784637 ~1979
1289261103140898 ~1980
293
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25-11-17