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

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Exponent Range:










MnStatusDetails
215503Factored
FactorDigitsBitsDate
104925243293028295498467433272993.12020-11-06 04:30:09
304059034660822471128454105692994.62015-11-28 03:27:32
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000246 / 1566
Estimated T-Level: 30.8
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Sam LaurFA8AB5242F1E4E200
Verified (Factored)Yuri SorkinFA8AB5242F1E4E200
Verified (Factored)Eivind TrielFA8AB5242F1E4E20194226
Verified (Factored)2002-12-25Brian J. BeesleyFA8AB5242F1E4E2029929
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse34E998C3348A89AC1013
Verified (Factored)2017-10-12kkmrkkblmbrbk34E998C3348A89AC19591513
Verified (Factored)2020-04-17Oliver Kruse4280AD8969CABA44112769253
Verified2020-11-06mnd94280AD8969CABA4423963653
Verified2020-11-06mrh4280AD8969CABA44214962853
Verified2023-08-03USAFSS4280AD8969CABA44219206353
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M215503/10492524329302829549846743327/30405903466082247112845410569 : 4280AD8969CABA44
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^57 to 2^58
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2022-02-26Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-12-04fbaurNF-PP1
Start=2/7, B1=150000000, B2=12600000000
2021-05-30Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-11-20Franklin WebberCERT
PRP Certification
Proof certified good
2020-11-06Simon JosefssonCERT
PRP Certification
Proof certified good
2020-11-06mrhC-PRP
M215503/30405903466082247112845410569/10492524329302829549846743327 : 4280AD8969CABA44
PRP proof power = 5
PRP: Verified
Proof certified good
2020-11-06mnd9C-PRP
M215503/10492524329302829549846743327/30405903466082247112845410569 : 4280AD8969CABA44
PRP proof power = 5
PRP: Verified
Proof certified good
2020-11-06_p95holder_F-ECM
Factor: 10492524329302829549846743327 / (ECM curve 3, B1=250000, B2=25000000)
2020-04-17Oliver KruseC-PRP
M215503/30405903466082247112845410569 : 4280AD8969CABA44
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M215503/30405903466082247112845410569 : 34E998C3348A89AC
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M215503/30405903466082247112845410569 : 34E998C3348A89AC
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M215503/30405903466082247112845410569 : 34E998C3348A89AC
PRP without proof (not generated)
2015-11-28bamF-ECM
Factor: 30405903466082247112845410569 / (ECM curve 2, B1=250000, B2=25000000)
2015-06-19snme2pm1NF
no factor from 2^61 to 2^62
2010-06-08Architects CubedNF
no factor from 2^60 to 2^61
2009-03-23axnNF-PM1
B1=5000000, B2=200000000, E=12
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-31Sturle SundeNF
no factor from 2^58 to 2^59