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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
638806379127761275910 ~2000
6388228811405410338311 ~2002
638833319127766663910 ~2000
638852441511081952910 ~2001
6388772034216589539911 ~2003
638911633383346979910 ~2001
638923847511139077710 ~2001
639007151127801430310 ~2000
639034439127806887910 ~2000
639034943127806988710 ~2000
639060959127812191910 ~2000
639082403127816480710 ~2000
639092351127818470310 ~2000
6391074591533857901711 ~2002
639112811127822562310 ~2000
639154991127830998310 ~2000
639182413383509447910 ~2001
6391847091917554127111 ~2003
639196469894875056710 ~2002
639204491127840898310 ~2000
639265163127853032710 ~2000
639293723127858744710 ~2000
639297203127859440710 ~2000
6393054896520915987911 ~2004
639316091127863218310 ~2000
Exponent Prime Factor Digits Year
639317279127863455910 ~2000
639345491127869098310 ~2000
639348533383609119910 ~2001
639364357383618614310 ~2001
639382259127876451910 ~2000
639386203639386203110 ~2001
639397151127879430310 ~2000
639408041383644824710 ~2001
639428057895199279910 ~2002
639430763127886152710 ~2000
639435361383661216710 ~2001
639438011127887602310 ~2000
639453803127890760710 ~2000
639457691127891538310 ~2000
639483371127896674310 ~2000
639488411127897682310 ~2000
639511199127902239910 ~2000
639513029511610423310 ~2001
639515963127903192710 ~2000
639520019127904003910 ~2000
6395629391534951053711 ~2002
639574139127914827910 ~2000
6396269836780046019911 ~2004
639633359127926671910 ~2000
639655091127931018310 ~2000
Exponent Prime Factor Digits Year
6396754091919026227111 ~2003
639734783127946956710 ~2000
639778319127955663910 ~2000
639795371127959074310 ~2000
639799571127959914310 ~2000
6398181074094835884911 ~2003
639830923639830923110 ~2001
639842213383905327910 ~2001
639865211127973042310 ~2000
639881701383929020710 ~2001
639883619127976723910 ~2000
639884939127976987910 ~2000
639884963127976992710 ~2000
6399042731535770255311 ~2002
639908411127981682310 ~2000
639932831127986566310 ~2000
6399561731535894815311 ~2002
639985919127997183910 ~2000
639990181383994108710 ~2001
639996871639996871110 ~2001
640008599128001719910 ~2000
640036499128007299910 ~2000
640044173896061842310 ~2002
640068083128013616710 ~2000
640098983128019796710 ~2000
Exponent Prime Factor Digits Year
640106711128021342310 ~2000
640111859128022371910 ~2000
640117811128023562310 ~2000
640125061384075036710 ~2001
640131683128026336710 ~2000
640144391128028878310 ~2000
640160879128032175910 ~2000
640170137512136109710 ~2001
640215479128043095910 ~2000
640229789512183831310 ~2001
640246091128049218310 ~2000
640247843128049568710 ~2000
640256783128051356710 ~2000
640263251128052650310 ~2000
640272131128054426310 ~2000
640277591128055518310 ~2000
640284299512227439310 ~2001
6403012032177024090311 ~2003
640326299128065259910 ~2000
640333931128066786310 ~2000
640341791128068358310 ~2000
6403462492433315746311 ~2003
640361179640361179110 ~2001
640365841384219504710 ~2001
640366057384219634310 ~2001
3275
GIMPS The Prime Pages FactorDb.com
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25-04-13