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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
1945319155625538
1945393427986478 ~1983
1945403505804798 ~1983
194543938908797 ~1980
19454393890878019
1945483311277298 ~1982
1945627466950498 ~1983
1945649466955778 ~1983
1945709155656738 ~1982
194576338915277 ~1980
1945781116746878 ~1981
1945919155673538 ~1982
1946081155686498 ~1982
1946141155691298 ~1982
1946171155693698 ~1982
194618338923677 ~1980
1946297467111298 ~1983
1946369155709538 ~1982
1946429272500078 ~1982
194647138929437 ~1980
1946501116790078 ~1981
1946501155720098
1946501739670398
1946507467161698 ~1983
1946537272515198 ~1982
Exp. Prime Factor Digits Year
1946561155724898 ~1982
194657938931597 ~1980
194660338932077 ~1980
1946603817573278
1946621116797278 ~1981
1946723622951378 ~1983
194677138935437 ~1980
1946899194689918 ~1982
1946939623020498 ~1983
194696338939277 ~1980
194711938942397 ~1980
1947259350506638 ~1982
1947371623158738 ~1983
1947371817895838
1947397116843838 ~1981
1947683467443938 ~1983
1947779155822338 ~1982
1947853116871198 ~1981
194792338958477 ~1980
194798338959677 ~1980
19479911285674079 ~1984
1948099194809918 ~1982
19481391753325119 ~1984
1948187155854978 ~1982
194822338964477 ~1980
Exp. Prime Factor Digits Year
1948337467600898 ~1983
1948619467668578 ~1983
1948637155890978 ~1982
194870338974077 ~1980
1948763467703138 ~1983
1949257116955438 ~1981
194945938989197 ~1980
194947138989437 ~1980
194963938992797 ~1980
1949777116986638 ~1981
1949813584943918 ~1983
194981938996397 ~1980
1949933116995998 ~1981
1950023762848997710 ~1988
1950089585026718 ~1983
1950107507027838 ~1983
1950317585095118 ~1983
195041939008397 ~1980
1950419156033538
1950449624143698 ~1983
1950691195069118 ~1982
1950881156070498 ~1982
1950989156079138 ~1982
1951013624324178 ~1983
1951123195112318 ~1982
Exp. Prime Factor Digits Year
1951193117071598 ~1981
1951193624381778
19511931873145299
195119939023997 ~1980
1951249106147945710 ~1986
1951501117090078 ~1981
1951553117093198 ~1981
1951627195162718 ~1982
19516333122612819 ~1985
195173939034797 ~1980
195181139036237 ~1980
1951837585551118 ~1983
1951867351336078 ~1982
19518671717642979
1951879351338238 ~1982
19518792186104499
1952053117123198 ~1981
1952201585660318 ~1983
19523511093316579 ~1984
1952563663871438 ~1983
1952567156205378 ~1982
1952627507683038 ~1983
1952641585792318 ~1983
195266339053277 ~1980
1952813117168798 ~1981
389
GIMPS The Prime Pages FactorDb.com
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26-04-05