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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
1989024731397804946310 ~2004
19891206131193472367911 ~2005
1989189623397837924710 ~2004
19891903913580542703911 ~2006
1989225599397845119910 ~2004
1989236603397847320710 ~2004
1989248711397849742310 ~2004
1989276623397855324710 ~2004
1989401483397880296710 ~2004
1989439079397887815910 ~2004
1989685079397937015910 ~2004
1989693071397938614310 ~2004
19896966011193817960711 ~2005
19897666371193859982311 ~2005
1989777659397955531910 ~2004
19897828972785696055911 ~2006
19898043532785726094311 ~2006
19898779371193926762311 ~2005
1989944483397988896710 ~2004
1990013243398002648710 ~2004
19900172231990017223111 ~2005
19900290731194017443911 ~2005
19900631931194037915911 ~2005
1990110959398022191910 ~2004
1990213031398042606310 ~2004
Exponent Prime Factor Digits Year
1990273319398054663910 ~2004
19903459971592276797711 ~2005
1990355063398071012710 ~2004
1990369943398073988710 ~2004
1990437731398087546310 ~2004
19904853971194291238311 ~2005
1990499363398099872710 ~2004
19905093171194305590311 ~2005
1990520771398104154310 ~2004
19906042571194362554311 ~2005
1990627031398125406310 ~2004
19906354971194381298311 ~2005
19906628533185060564911 ~2006
19906767111592541368911 ~2005
1990785143398157028710 ~2004
1990799663398159932710 ~2004
1990805903398161180710 ~2004
1990814099398162819910 ~2004
19908259371194495562311 ~2005
1990930559398186111910 ~2004
19909481211592758496911 ~2005
19910302211194618132711 ~2005
1991079683398215936710 ~2004
1991084471398216894310 ~2004
19911676132787634658311 ~2006
Exponent Prime Factor Digits Year
1991191703398238340710 ~2004
19912005734380641260711 ~2006
1991308391398261678310 ~2004
19913370673186139307311 ~2006
19914075411194844524711 ~2005
1991461211398292242310 ~2004
19914759711593180776911 ~2005
1991508131398301626310 ~2004
19916475731194988543911 ~2005
19916903473585042624711 ~2006
1991690951398338190310 ~2004
1991756411398351282310 ~2004
19917741895975322567111 ~2007
19917869331195072159911 ~2005
19917887873585219816711 ~2006
1991826803398365360710 ~2004
19918361038365711632711 ~2007
1991941403398388280710 ~2004
1991944583398388916710 ~2004
19919866271991986627111 ~2005
1992019163398403832710 ~2004
19921021311593681704911 ~2005
19921552671593724213711 ~2005
1992226979398445395910 ~2004
1992319319398463863910 ~2004
Exponent Prime Factor Digits Year
1992326939398465387910 ~2004
1992438551398487710310 ~2004
1992461759398492351910 ~2004
1992478223398495644710 ~2004
1992485219398497043910 ~2004
19925339874782081568911 ~2006
1992534179398506835910 ~2004
19925414771195524886311 ~2005
1992595799398519159910 ~2004
19926010571195560634311 ~2005
1992642083398528416710 ~2004
1992683879398536775910 ~2004
1992788771398557754310 ~2004
1992809303398561860710 ~2004
1992853451398570690310 ~2004
19930615571195836934311 ~2005
19931427771594514221711 ~2005
1993167119398633423910 ~2004
1993170659398634131910 ~2004
1993185251398637050310 ~2004
19932789971195967398311 ~2005
1993290023398658004710 ~2004
1993294139398658827910 ~2004
19933174371195990462311 ~2005
19934255571196055334311 ~2005
4047
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25-12-07