Marin Mersenne 2^P-1
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MnStatusDetails
270287Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
776804839929.5old
1982839824379639821997432477.42016-03-11 13:47:36
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000222 / 1566
Estimated T-Level: 30.7
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-24Oliver Kruse50C48BC1A7BE881D2013
Verified2017-10-12Oliver Kruse50C48BC1A7BE881D210530213
Verified2017-11-06kkmrkkblmbrbk50C48BC1A7BE881D213188913
Verified2020-04-17Oliver Kruse844074B3103E5CB4219031153
Verified2024-08-03kkmrkkblmbrbk844074B3103E5CB422086753
History
DateUserTypeResult
2024-10-25yuriy_5-1NF-PM1
B1=24866404, B2=6102286840650
2024-08-03ANONYMOUSCERT
PRP Certification
Proof certified good
2024-08-03kkmrkkblmbrbkC-PRP
M270287/776804839/198283982437963982199743 : 844074B3103E5CB4
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-21Lisander ViaeneNF-PM1
B1=5550000, B2=22789551330
2022-03-19Lisander ViaeneNF-PM1
B1=5550000
2022-01-03Lisander ViaeneNF-PM1
B1=100000
2020-04-17Oliver KruseC-PRP
M270287/776804839/198283982437963982199743 : 844074B3103E5CB4
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M270287/776804839/198283982437963982199743 : 50C48BC1A7BE881D
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M270287/776804839/198283982437963982199743 : 50C48BC1A7BE881D
PRP: Verified
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M270287/776804839/198283982437963982199743 : 50C48BC1A7BE881D
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M270287/776804839/198283982437963982199743 : 50C48BC1A7BE881D
PRP without proof (not generated)
2016-03-11TJAOIF-ECM
Factor: 198283982437963982199743 / (ECM curve 10, B1=50000, B2=5000000)