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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
638392397383035438310 ~2001
638413463127682692710 ~2000
638421317383052790310 ~2001
638449631127689926310 ~2000
638453069510762455310 ~2001
638457983127691596710 ~2000
638461193383076715910 ~2001
638476211127695242310 ~2000
638484383127696876710 ~2000
638496359127699271910 ~2000
638544059127708811910 ~2000
638554883127710976710 ~2000
638609759127721951910 ~2000
638618423127723684710 ~2000
638619281383171568710 ~2001
638645939127729187910 ~2000
638650559510920447310 ~2001
638652101510921680910 ~2001
6386566931405044724711 ~2002
638704523127740904710 ~2000
638730311127746062310 ~2000
638735893383241535910 ~2001
638739197894234875910 ~2002
638744003127748800710 ~2000
638752091127750418310 ~2000
Exponent Prime Factor Digits Year
6387739517665287412111 ~2004
638806379127761275910 ~2000
6388228811405410338311 ~2002
638833319127766663910 ~2000
638852441511081952910 ~2001
6388772034216589539911 ~2004
638902811127780562310 ~2000
638911633383346979910 ~2001
638923847511139077710 ~2001
638985419127797083910 ~2000
639007151127801430310 ~2000
639034439127806887910 ~2000
639034943127806988710 ~2000
639059951127811990310 ~2000
639060959127812191910 ~2000
639082403127816480710 ~2000
639092351127818470310 ~2000
6391074591533857901711 ~2002
639112811127822562310 ~2000
6391216273706905436711 ~2003
639154991127830998310 ~2000
639182413383509447910 ~2001
6391847091917554127111 ~2003
639196469894875056710 ~2002
639204491127840898310 ~2000
Exponent Prime Factor Digits Year
639258563127851712710 ~2000
639265163127853032710 ~2000
639293723127858744710 ~2000
639297203127859440710 ~2000
6393054896520915987911 ~2004
639316091127863218310 ~2000
639317279127863455910 ~2000
639345491127869098310 ~2000
639348533383609119910 ~2001
639364357383618614310 ~2001
639369443127873888710 ~2000
639382259127876451910 ~2000
639386203639386203110 ~2002
639397151127879430310 ~2000
639402371127880474310 ~2000
639408041383644824710 ~2001
639428057895199279910 ~2002
639430763127886152710 ~2000
639435361383661216710 ~2001
639438011127887602310 ~2000
639453803127890760710 ~2000
639457691127891538310 ~2000
639483371127896674310 ~2000
639488411127897682310 ~2000
639511199127902239910 ~2000
Exponent Prime Factor Digits Year
639513029511610423310 ~2001
639515963127903192710 ~2000
639520019127904003910 ~2000
639553259127910651910 ~2000
6395629391534951053711 ~2002
639563591127912718310 ~2000
639574139127914827910 ~2000
6396269836780046019911 ~2004
639633359127926671910 ~2000
639655091127931018310 ~2000
6396754091919026227111 ~2003
639734783127946956710 ~2000
639778319127955663910 ~2000
639795371127959074310 ~2000
639799571127959914310 ~2000
6398181074094835884911 ~2003
639830923639830923110 ~2002
639842213383905327910 ~2001
639865211127973042310 ~2000
639881701383929020710 ~2001
639883619127976723910 ~2000
639884939127976987910 ~2000
639884963127976992710 ~2000
6399042731535770255311 ~2002
639908411127981682310 ~2000
3719
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26-05-03