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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
217779971306679839 ~1989
217781573048941999 ~1990
21778439435568798 ~1988
21778499435569998 ~1988
21778703435574078 ~1988
217787271742298179 ~1990
21778931435578638 ~1988
21779123435582478 ~1988
217793411306760479 ~1989
21779591435591838 ~1988
21779759435595198 ~1988
21780743435614878 ~1988
217807611742460899 ~1990
21780779435615598 ~1988
21781223435624478 ~1988
21781631435632638 ~1988
217816491742531939 ~1990
21782339435646798 ~1988
21782963435659278 ~1988
21783011435660238 ~1988
21783071435661438 ~1988
217831491742651939 ~1990
21783431435668638 ~1988
21783659435673198 ~1988
21783719435674398 ~1988
Exponent Prime Factor Digits Year
21784043435680878 ~1988
21784439435688798 ~1988
21784739435694798 ~1988
21784883435697678 ~1988
21784943435698878 ~1988
21785579435711598 ~1988
21785663435713278 ~1988
21785843435716878 ~1988
21786263435725278 ~1988
21787751435755038 ~1988
21788099435761998 ~1988
21788159435763198 ~1988
21789191435783838 ~1988
217893771743150179 ~1990
21789899435797998 ~1988
21790091435801838 ~1988
21791519435830398 ~1988
21792119435842398 ~1988
21792503435850078 ~1988
21792863435857278 ~1988
21792923435858478 ~1988
21793151435863038 ~1988
217935371307612239 ~1989
21793631435872638 ~1988
21793763435875278 ~1988
Exponent Prime Factor Digits Year
21794543435890878 ~1988
21794939435898798 ~1988
21795563435911278 ~1988
217957371743658979 ~1990
21796319435926398 ~1988
21796343435926878 ~1988
21796583435931678 ~1988
21797063435941278 ~1988
21797159435943198 ~1988
21797423435948478 ~1988
21797651435953038 ~1988
21797843435956878 ~1988
21797903435958078 ~1988
21798323435966478 ~1988
217990791743926339 ~1990
217999011307994079 ~1989
218004971308029839 ~1989
21801023436020478 ~1988
218018411308110479 ~1989
218025131308150799 ~1989
218026993924485839 ~1991
21802883436057678 ~1988
21803063436061278 ~1988
21804179436083598 ~1988
21804239436084798 ~1988
Exponent Prime Factor Digits Year
21804539436090798 ~1988
21804683436093678 ~1988
21804983436099678 ~1988
21805463436109278 ~1988
21805571436111438 ~1988
218055792180557919 ~1990
218062071744496579 ~1990
21806483436129678 ~1988
21806723436134478 ~1988
218073435233762339 ~1991
21807419436148398 ~1988
21807431436148638 ~1988
218076792180767919 ~1990
21807743436154878 ~1988
218080373053125199 ~1990
218085293053194079 ~1990
218088614797949439 ~1991
21809003436180078 ~1988
218092191744737539 ~1990
218097891744783139 ~1990
218105331308631999 ~1989
21810731436214638 ~1988
21810839436216798 ~1988
218112611308675679 ~1989
21811511436230238 ~1988
1473
GIMPS The Prime Pages FactorDb.com
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25-04-13