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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
191709611150257679 ~1989
19171151383423038 ~1988
19171343383426878 ~1988
19171499383429998 ~1988
191719518052219439 ~1991
19173131383462638 ~1988
19173491383469838 ~1988
191738871533910979 ~1989
19173923383478478 ~1988
19174271383485438 ~1988
19174271107375917710
19174871383497438 ~1988
19174979383499598 ~1988
191750531150503199 ~1989
191755811150534879 ~1989
19175963383519278 ~1988
19176431383528638 ~1988
19176551383531038 ~1988
191767131150602799 ~1989
19177199383543998 ~1988
191772531150635199 ~1989
191773071534184579 ~1989
19177391383547838 ~1988
191775891534207139 ~1989
19177799383555998 ~1988
Exponent Prime Factor Digits Year
19177943383558878 ~1988
19178123383562478 ~1988
19178171383563438 ~1988
19178503157263724710 ~1992
191788211150729279 ~1989
191789771150738639 ~1989
191789932685059039 ~1990
19179371383587438 ~1988
191796491242841255311 ~1994
19179851383597038 ~1988
19179899383597998 ~1988
19180019383600398 ~1988
191804634986920399 ~1991
191810811150864879 ~1989
19181243383624878 ~1988
19181759383635198 ~1988
19181951383639038 ~1988
19182203383644078 ~1988
19182479383649598 ~1988
191826073452869279 ~1990
191826891534615139 ~1989
19183091383661838 ~1988
191831831918318319 ~1990
19183523383670478 ~1988
19183691383673838 ~1988
Exponent Prime Factor Digits Year
19183991383679838 ~1988
19184339383686798 ~1988
191844411151066479 ~1989
19184531383690638 ~1988
19184663383693278 ~1988
19184723383694478 ~1988
19185011383700238 ~1988
19185119383702398 ~1988
19185143383702878 ~1988
19185623383712478 ~1988
19185671383713438 ~1988
19185689118951271910 ~1992
19185899383717998 ~1988
19186103383722078 ~1988
191863813069820979 ~1990
19186451383729038 ~1988
19186619383732398 ~1988
19186679383733598 ~1988
191873411151240479 ~1989
19187471383749438 ~1988
19187579383751598 ~1988
19187639383752798 ~1988
19187771383755438 ~1988
191878734605089539 ~1991
19188839383776798 ~1988
Exponent Prime Factor Digits Year
19188899383777998 ~1988
19189283383785678 ~1988
191893971151363839 ~1989
19189979383799598 ~1988
191900113454201999 ~1990
19190159383803198 ~1988
19190243383804878 ~1988
19191059383821198 ~1988
19191383383827678 ~1988
19191443383828878 ~1988
191917616141363539 ~1991
19191923383838478 ~1988
19192091383841838 ~1988
19192919383858398 ~1988
191943411535547299 ~1989
191946611151679679 ~1989
19195019383900398 ~1988
191950191535601539
19195331383906638 ~1988
191956611151739679 ~1989
191957531151745199 ~1989
19196291383925838 ~1988
19196423383928478 ~1988
19196711383934238 ~1988
191969171151815039 ~1989
1407
GIMPS The Prime Pages FactorDb.com
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25-07-08