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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
1281755821769053492710 ~2003
1281762203256352440710 ~2002
128183734111023801132712 ~2006
12818529375127411748111 ~2005
1281897013769138207910 ~2003
1281898619256379723910 ~2002
1281905123256381024710 ~2002
12819145491794680368711 ~2004
1281915359256383071910 ~2002
1281921131256384226310 ~2002
1281938351256387670310 ~2002
12819412491025552999311 ~2004
1282010881769206528710 ~2003
1282036559256407311910 ~2002
1282046723256409344710 ~2002
1282074539256414907910 ~2002
12821746796154438459311 ~2006
1282208183256441636710 ~2002
1282209503256441900710 ~2002
1282296419256459283910 ~2002
1282318571256463714310 ~2002
1282334843256466968710 ~2002
1282351571256470314310 ~2002
1282353599256470719910 ~2002
12823710291025896823311 ~2004
Exponent Prime Factor Digits Year
1282404659256480931910 ~2002
1282447613769468567910 ~2003
1282458431256491686310 ~2002
1282460303256492060710 ~2002
1282522019256504403910 ~2002
1282536239256507247910 ~2002
1282590443256518088710 ~2002
1282606181769563708710 ~2003
1282682651256536530310 ~2002
1282726283256545256710 ~2002
12827425011026194000911 ~2004
1282758611256551722310 ~2002
1282759451256551890310 ~2002
1282772321769663392710 ~2003
1282831703256566340710 ~2002
1282856999256571399910 ~2002
1282872119256574423910 ~2002
1282885573769731343910 ~2003
1282900511256580102310 ~2002
1282929611256585922310 ~2002
1282973953769784371910 ~2003
1282974851256594970310 ~2002
1283091913769855147910 ~2003
1283192753769915651910 ~2003
12831934515132773804111 ~2005
Exponent Prime Factor Digits Year
1283301191256660238310 ~2002
1283322959256664591910 ~2002
1283348051256669610310 ~2002
1283398043256679608710 ~2002
12834507711026760616911 ~2004
1283551019256710203910 ~2002
12835848591026867887311 ~2004
1283589491256717898310 ~2002
12835997293850799187111 ~2005
1283617091256723418310 ~2002
1283667323256733464710 ~2002
1283687759256737551910 ~2002
1283700563256740112710 ~2002
1283739371256747874310 ~2002
12837487971797248315911 ~2004
12838032732054085236911 ~2004
12838243515135297404111 ~2005
1283834819256766963910 ~2002
1283932439256786487910 ~2002
12839648831283964883111 ~2004
12839693476163052865711 ~2006
12839837391027186991311 ~2004
1284079763256815952710 ~2002
1284114323256822864710 ~2002
1284195457770517274310 ~2003
Exponent Prime Factor Digits Year
1284219071256843814310 ~2002
1284238799256847759910 ~2002
1284255911256851182310 ~2002
1284264277770558566310 ~2003
1284288419256857683910 ~2002
1284320951256864190310 ~2002
1284328757770597254310 ~2003
1284522611256904522310 ~2002
1284560881770736528710 ~2003
1284572279256914455910 ~2002
1284591683256918336710 ~2002
1284615071256923014310 ~2002
1284633659256926731910 ~2002
12846730971798542335911 ~2004
1284680051256936010310 ~2002
1284688201770812920710 ~2003
12846996431284699643111 ~2004
12847033312312465995911 ~2004
12847246693854174007111 ~2005
1284764711256952942310 ~2002
1284765851256953170310 ~2002
1284771443256954288710 ~2002
1284799643256959928710 ~2002
1284800063256960012710 ~2002
1284816503256963300710 ~2002
3585
GIMPS The Prime Pages FactorDb.com
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25-05-04