Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnDetails
7301633
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 267
Factored
FactorDigitsBitsDate
7335191000872850450892169.32020-05-27 01:11:07
ECM
DigitsB1Curves
255000053 / 280
Estimated T-Level: 20.9 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
Factored2000-06-11Ronald Hofstede954B5673EB2A11914940439Windows,Prime95,v19,(aka WV1)
Factored2002-05-05Massimo Cappelli954B5673EB2A11914829328Windows,Prime95,v21,(aka WX1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2020-05-27riccardo uberti09F2D5F53160D4931393910753
Verified
PRP without proof (not generated)
2020-06-06oodaira09F2D5F53160D4931328595653
History
DateUserTypeResult
2025-10-08Sid & AndyNF-PM1B1=2600000, B2=4388651190
2021-06-01riccardo ubertiNF-PP1Start=6/5, B1=1500000, B2=30000000
2021-05-30riccardo ubertiNF-PP1Start=2/7, B1=1500000, B2=30000000
2020-06-06oodairaC-PRPM7301633/733519100087285045089 : 09F2D5F53160D493
2020-05-27riccardo ubertiC-PRPM7301633/733519100087285045089 : 09F2D5F53160D493
2020-05-27GdSFFactor: 733519100087285045089 / TF: 69-70
2020-05-27GdSNFno factor TF: 68-69
2020-03-06GdSNF-PM1B1=310809, B2=6216181
2018-08-05ramgeisNFno factor TF: 67-68
2016-10-01Gordon SpenceNFno factor TF: 66-67
2015-06-16VictordeHollanderNFno factor TF: 65-66
2013-11-12David CampeauNFno factor TF: 64-65
2012-09-05Squeeky_SquirrelNF-PM1B1=90000, B2=1620000, E=6
2012-03-24David CampeauNFno factor TF: 63-64
2002-05-05Massimo Cappelli (ik5pwa)C-LL954B5673EB2A1191
2002-04-14Massimo Cappelli (ik5pwa)NF-PM1B1=35000, B2=306250
2000-06-11-anonymous-C-LL954B5673EB2A1191
1998-07-05-anonymous-NFno factor TF: 1-63
1998-06-28-anonymous-NFno factor TF: 1-62