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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
44187263883745278 ~1991
44190851883817038 ~1991
4419156110287795400912 ~1998
44191991883839838 ~1991
44192279883845598 ~1991
44192699883853998 ~1991
44193179883863598 ~1991
441939732651638399 ~1992
44194141132582423110 ~1994
441960012651760079 ~1992
441971172651827039 ~1992
44197511883950238 ~1991
441990412651942479 ~1992
442008173536065379 ~1992
44202611884052238 ~1991
44202659884053198 ~1991
44203259884065198 ~1991
44204291884085838 ~1991
44204561380159224710 ~1995
44204591884091838 ~1991
44205383884107678 ~1991
442071532652429199 ~1992
44207183884143678 ~1991
442076772652460639 ~1992
442093372652560239 ~1992
Exponent Prime Factor Digits Year
442096514420965119 ~1992
442097772652586639 ~1992
44209943884198878 ~1991
44210399884207998 ~1991
442103993536831939
44211371884227438 ~1991
44212823884256478 ~1991
442132073537056579 ~1992
442132317321711053711 ~1998
44214143884282878 ~1991
44214179884283598 ~1991
442143372652860239 ~1992
44214899884297998 ~1991
442169474421694719 ~1992
44220083884401678 ~1991
442212117959817999 ~1993
442236012653416079 ~1992
442236893104502967911 ~1997
44223743884474878 ~1991
442255572653533439 ~1992
44225771884515438 ~1991
442261997960715839 ~1993
44226487256513624710 ~1994
44228039884560798 ~1991
44229551884591038 ~1991
Exponent Prime Factor Digits Year
44230883884617678 ~1991
44231711884634238 ~1991
442320074423200719 ~1992
442325772653954639 ~1992
442326772653960639 ~1992
44232803884656078 ~1991
44233043884660878 ~1991
44233223884664478 ~1991
44233811884676238 ~1991
442359317077748979 ~1993
442368772654212639 ~1992
44237471884749438 ~1991
44237603884752078 ~1991
442378397962811039 ~1993
44238599884771998 ~1991
442397093539176739 ~1992
44240543884810878 ~1991
44240699884813998 ~1991
442414932654489599 ~1992
44243159884863198 ~1991
44243351884867038 ~1991
44243939884878798 ~1991
44244911884898238 ~1991
442449713539597699 ~1992
44246711884934238 ~1991
Exponent Prime Factor Digits Year
442493537079896499 ~1993
44249819884996398 ~1991
44249951884999038 ~1991
44250023885000478 ~1991
44250749345155842310 ~1995
442510913540087299 ~1992
442513217080211379 ~1993
44252423885048478 ~1991
44252627115056830310 ~1993
44255279885105598 ~1991
44255699885113998 ~1991
442557593540460739 ~1992
44255891885117838 ~1991
442573317966319599 ~1993
44259023885180478 ~1991
44260019885200398 ~1991
44260043885200878 ~1991
442601693540813539 ~1992
44261219885224398 ~1991
44262059885241198 ~1991
442630612655783679 ~1992
44263391885267838 ~1991
44263811885276238 ~1991
44265131885302638 ~1991
44265239885304798 ~1991
1976
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25-05-04