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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
1278839613842738 ~1982
127885776731437 ~1980
1278881102310498 ~1980
127891125578237 ~1979
127898325579677 ~1979
1278983332535598
1279171204667378 ~1981
1279177614004978 ~1982
1279193409341778 ~1982
127931925586397 ~1979
1279357383807118 ~1982
1279417383825118 ~1982
1279427230296878 ~1981
1279511409443538 ~1982
1279627127962718 ~1980
127964325592877 ~1979
1279661102372898 ~1980
1279727102378178 ~1980
1279787102382978 ~1980
127991925598397 ~1979
127993125598637 ~1979
1280101281622238 ~1981
128014176808477 ~1980
128018325603677 ~1979
1280221281648638 ~1981
Exp. Prime Factor Digits Year
1280267102421378 ~1980
128029125605837 ~1979
12802971101055439 ~1983
1280317614552178 ~1982
1280473691455438 ~1982
128056176833677 ~1980
128059776835837 ~1980
128073776844237 ~1980
1280857589194238 ~1982
128108325621677 ~1979
1281187743088478 ~1982
1281193307486338 ~1981
1281439512575618 ~1982
128150325630077 ~1979
1281667820266898 ~1982
12818711435695539 ~1983
1281941102555298 ~1980
128197125639437 ~1979
12820311538437219 ~1983
1282069307696578 ~1981
128213376927997 ~1980
128216325643277 ~1979
1282261512904418 ~1982
1282279307746978 ~1981
128238176942877 ~1980
Exp. Prime Factor Digits Year
1282469384740718 ~1982
1282471538637838 ~1982
128249925649997 ~1979
128251125650237 ~1979
1282517179552398 ~1981
1282817102625378 ~1980
1282907641453518 ~1982
1282969615825138 ~1982
1283011513204418 ~1982
1283027102642178 ~1980
1283027307926498
128306325661277 ~1979
128309925661997 ~1979
1283099230957838
128333925666797 ~1979
1283441102675298 ~1980
12834411411785119
1283521282374638 ~1981
128353777012237 ~1980
1283537693109998
1283549102683938 ~1980
1283563205370098 ~1981
1283731847262478 ~1982
128375925675197 ~1979
128387925677597 ~1979
Exp. Prime Factor Digits Year
128393925678797 ~1979
1284007744724078 ~1982
128413125682637 ~1979
1284293410973778 ~1982
128431777059037 ~1980
1284329109681696710 ~1985
1284487513794818 ~1982
1284511205521778 ~1981
128455125691037 ~1979
1284583128458318 ~1980
128460177076077 ~1980
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
288
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25-06-01