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

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MnStatusDetails
245087Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
7608916926494494011859.42007-08-05 13:14:30
ECM
DigitsB1Curves
2550000280 / 280
30250000596 / 640
Estimated T-Level: 29.7
TF below 2^94 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse470EB6B902F0EE011013
Verified2017-10-12kkmrkkblmbrbk470EB6B902F0EE0112831513
Verified2020-04-17Oliver KruseB209663F3FE721CE119160453
Verified2024-02-03Wentao HuangB209663F3FE721CE195753
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M245087/760891692649449401 : B209663F3FE721CE
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-12Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-07-28Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M245087/760891692649449401 : B209663F3FE721CE
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M245087/760891692649449401 : 470EB6B902F0EE01
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M245087/760891692649449401 : 470EB6B902F0EE01
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M245087/760891692649449401 : 470EB6B902F0EE01
PRP without proof (not generated)
2007-08-05George WoltmanF-ECM
Factor: 760891692649449401