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

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MnStatusDetails
252029Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1961000827563111547.5old
2437977959533940750257572820093097.62022-11-19 14:02:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000197 / 1566
Estimated T-Level: 30.6 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver KruseC7337A331FB1B9A31013
Verified (Factored)2017-10-12kkmrkkblmbrbkC7337A331FB1B9A31539613
Verified (Factored)2020-04-17Oliver Kruse16C926F43D8CC27419202253
Verified2022-11-20LordJulius16C926F43D8CC27424318253
History
DateUserTypeResult
2022-11-20ANONYMOUSCERT
PRP Certification
Proof certified good
2022-11-20LordJuliusC-PRP
M252029/196100082756311/243797795953394075025757282009 : 16C926F43D8CC274
PRP proof power = 5
PRP: Verified
Proof certified good
2022-11-19_p95holder_F-ECM
Factor: 243797795953394075025757282009 / (ECM curve 1, B1=250000, B2=25000000)
2022-04-21Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-08-22Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2021-06-03ViliamFNF-PM1
B1=50000000, B2=7150000000
2020-04-17Oliver KruseC-PRP
M252029/196100082756311 : 16C926F43D8CC274
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M252029/196100082756311 : C7337A331FB1B9A3
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M252029/196100082756311 : C7337A331FB1B9A3
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M252029/196100082756311 : C7337A331FB1B9A3
PRP without proof (not generated)