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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
19183523383670478 ~1988
19183691383673838 ~1988
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
Exponent Prime Factor Digits Year
191878734605089539 ~1990
19188839383776798 ~1988
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
Exponent Prime Factor Digits Year
19196711383934238 ~1988
191969171151815039 ~1989
191969811151818879 ~1989
19197023383940478 ~1988
191972931151837599 ~1989
191974211151845279 ~1989
191975571535804579 ~1989
19197599383951998 ~1988
19198139383962798 ~1988
19198451383969038 ~1988
191988771151932639 ~1989
19199483383989678 ~1988
19199639383992798 ~1988
19200011384000238 ~1988
192006731152040399 ~1989
19201139384022798 ~1988
19201271384025438 ~1988
19201439384028798 ~1988
19201811384036238 ~1988
192023574608565699 ~1990
192023871536190979 ~1989
19203311384066238 ~1988
19203323384066478 ~1988
19203491384069838 ~1988
19203731384074638 ~1988
Exponent Prime Factor Digits Year
192037919601895519 ~1991
19203923384078478 ~1988
19204439384088798 ~1988
19204571384091438 ~1988
19204631384092638 ~1988
192049811152298879 ~1989
192051131152306799 ~1989
19205579384111598 ~1988
19205723384114478 ~1988
19205831384116638 ~1988
19205891384117838 ~1988
19206191384123838 ~1988
19207319384146398 ~1988
192073191536585539
19207511384150238 ~1988
19208303384166078 ~1988
192088633073418099 ~1990
19209251384185038 ~1988
19209683142151654310 ~1992
19210043384200878 ~1988
19210199384203998 ~1988
19210403384208078 ~1988
19210679384213598 ~1988
192108313457949599 ~1990
192109871921098719 ~1990
1385
GIMPS The Prime Pages FactorDb.com
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25-04-13