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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
1247736239249547247910 ~2002
1247763911249552782310 ~2002
1247849651249569930310 ~2002
1247871671249574334310 ~2002
1247883683249576736710 ~2002
1247913119249582623910 ~2002
1247921861748753116710 ~2003
12479249272246264868711 ~2004
1247947817748768690310 ~2003
1247981699249596339910 ~2002
1248001213748800727910 ~2003
12480121511996819441711 ~2004
12480204072246436732711 ~2004
1248041423249608284710 ~2002
1248057059249611411910 ~2002
1248084791249616958310 ~2002
1248115223249623044710 ~2002
1248123743249624748710 ~2002
1248128041748876824710 ~2003
1248151349998521079310 ~2004
1248165839249633167910 ~2002
1248207011249641402310 ~2002
1248261299249652259910 ~2002
1248273179249654635910 ~2002
1248304649998643719310 ~2004
Exponent Prime Factor Digits Year
1248326699249665339910 ~2002
1248363299249672659910 ~2002
1248375119249675023910 ~2002
1248396557749037934310 ~2003
1248402641998722112910 ~2004
1248441731998753384910 ~2004
1248485999249697199910 ~2002
1248492737998794189710 ~2004
1248505859249701171910 ~2002
1248546263249709252710 ~2002
1248550223249710044710 ~2002
1248663341998930672910 ~2004
1248750311249750062310 ~2002
1248760511249752102310 ~2002
1248821557749292934310 ~2003
12488344031248834403111 ~2004
1248841019249768203910 ~2002
1248852431249770486310 ~2002
1248913931249782786310 ~2002
12489493673247268354311 ~2005
12490267632997664231311 ~2005
1249042211999233768910 ~2004
1249060511249812102310 ~2002
1249072091249814418310 ~2002
1249148171999318536910 ~2004
Exponent Prime Factor Digits Year
1249156043249831208710 ~2002
1249176077749505646310 ~2003
12492058436246029215111 ~2005
1249213583249842716710 ~2002
1249313771249862754310 ~2002
1249357511999486008910 ~2004
1249365893749619535910 ~2003
12493783916996518989711 ~2006
12494017631249401763111 ~2004
1249435703249887140710 ~2002
1249542869999634295310 ~2004
1249550531249910106310 ~2002
1249561559249912311910 ~2002
1249627031249925406310 ~2002
1249663973749798383910 ~2003
1249671653749802991910 ~2003
1249677371999741896910 ~2004
1249685891249937178310 ~2002
1249731971249946394310 ~2002
1249776239249955247910 ~2002
1249776611249955322310 ~2002
1249782461749869476710 ~2003
1249788803249957760710 ~2002
1249791863249958372710 ~2002
1249811399249962279910 ~2002
Exponent Prime Factor Digits Year
1249825691249965138310 ~2002
1249834931249966986310 ~2002
1249839179249967835910 ~2002
1249873343249974668710 ~2002
1249877903249975580710 ~2002
1249946903249989380710 ~2002
1249949999249989999910 ~2002
1249967363249993472710 ~2002
1249977611249995522310 ~2002
12500222511000017800911 ~2004
1250029871250005974310 ~2002
12500385071250038507111 ~2004
1250065259250013051910 ~2002
1250085503250017100710 ~2002
1250099531250019906310 ~2002
1250199803250039960710 ~2002
12502111871250211187111 ~2004
1250215451250043090310 ~2002
12502222573750666771111 ~2005
1250242139250048427910 ~2002
12502923432000467748911 ~2004
12503565591000285247311 ~2004
1250370851250074170310 ~2002
1250375459250075091910 ~2002
1250384279250076855910 ~2002
3807
GIMPS The Prime Pages FactorDb.com
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25-11-02