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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 Dig. Year
42471350792384942701584712 ~2022
42471767228384943534456712 ~2022
42473144761184946289522312 ~2022
42474239911184948479822312 ~2022
42479511761984959023523912 ~2022
4248200100736032...43036714 2025
42482071321184964142642312 ~2022
42482372108384964744216712 ~2022
42483094339184966188678312 ~2022
42485321189984970642379912 ~2022
4248670821977392...30227914 2025
42488871643184977743286312 ~2022
4249163059091113...14815915 2025
42492261853184984523706312 ~2022
42493836497984987672995912 ~2022
42494895349184989790698312 ~2022
42497625818384995251636712 ~2022
42498514513184997029026312 ~2022
42498918769184997837538312 ~2022
42498930271184997860542312 ~2022
42499141399184998282798312 ~2022
42499502135984999004271912 ~2022
42500286797985000573595912 ~2022
42500734861185001469722312 ~2022
42502457315985004914631912 ~2022
Exponent Prime Factor Dig. Year
4250379404638500...09260114 2025
42504610829985009221659912 ~2022
42506018312385012036624712 ~2022
42512520583185025041166312 ~2022
42515909077185031818154312 ~2022
42518100527985036201055912 ~2022
42519096890385038193780712 ~2022
42521822222385043644444712 ~2022
42528885025185057770050312 ~2022
42532200395985064400791912 ~2022
42534485461185068970922312 ~2022
42540202345185080404690312 ~2022
4254207576779784...26571114 2025
4254513998877564...99908715 2025
42551669749185103339498312 ~2022
42558073753185116147506312 ~2022
42561407072385122814144712 ~2022
42561654530385123309060712 ~2022
42569621579985139243159912 ~2022
42571128266385142256532712 ~2022
42576221275185152442550312 ~2022
4257626851936429...64143115 2025
42582902893185165805786312 ~2022
42585482029185170964058312 ~2022
42587464675185174929350312 ~2022
Exponent Prime Factor Dig. Year
42590864609985181729219912 ~2022
42596284439985192568879912 ~2022
42600806347185201612694312 ~2022
42600844531185201689062312 ~2022
42601123769985202247539912 ~2022
42605331242385210662484712 ~2022
42606967658385213935316712 ~2022
42609701275185219402550312 ~2022
42611688041985223376083912 ~2022
42615432659985230865319912 ~2022
42618453121185236906242312 ~2022
42618654788385237309576712 ~2022
4262258637171125...02128915 2025
42623056391985246112783912 ~2022
42624175466385248350932712 ~2022
42625624861185251249722312 ~2022
42630539096385261078192712 ~2022
42631395872385262791744712 ~2022
42631810895985263621791912 ~2022
42633384818385266769636712 ~2022
42643536902385287073804712 ~2022
4264561312817079...79264714 2025
42647692459185295384918312 ~2022
42656554580385313109160712 ~2022
42657881558385315763116712 ~2022
Exponent Prime Factor Dig. Year
42660618361185321236722312 ~2022
42660928309185321856618312 ~2022
42675615671985351231343912 ~2022
42676968641985353937283912 ~2022
4267760095939218...07208914 2025
42681897308385363794616712 ~2022
42696977149185393954298312 ~2022
42698475170385396950340712 ~2022
42700580078385401160156712 ~2022
42717151631985434303263912 ~2022
42720918253185441836506312 ~2022
42725647904385451295808712 ~2022
42726324977985452649955912 ~2022
42729283577985458567155912 ~2022
42736781297985473562595912 ~2022
42740478235185480956470312 ~2022
42740946965985481893931912 ~2022
42741935645985483871291912 ~2022
42746245507185492491014312 ~2022
4275370298696498...54008914 2025
42756150629985512301259912 ~2022
42757890181185515780362312 ~2022
42760524110385521048220712 ~2022
42770275724385540551448712 ~2022
42772341404385544682808712 ~2022
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