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

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MnStatusDetails
2222249Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
17777993824.1old
12154153386536182236312270.02023-01-21 09:22:54
618844122228944005667512375.72025-02-07 18:56:17
3074998340941594652822172172788.02025-04-10 08:40:47
ECM
DigitsB1Curves
2550000280 / 280
30250000224 / 640
Estimated T-Level: 26.8 ⓘ
TF below 2^84 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-12kkmrkkblmbrbk369CDAA403CBAA3C16255553
Verified (Factored)2017-10-27Oliver Kruse369CDAA403CBAA3C157490553
Verified (Factored)2023-01-23_p95holder_369CDAA403CBAA3C238434053
Verified (Factored)2025-02-12pilotpsk369CDAA403CBAA3C3121286353
Verified2025-04-15Perig369CDAA403CBAA3C442070653
History
DateUserTypeResult
2025-04-15ResolverCERT
PRP Certification
Proof certified good
2025-04-15PerigC-PRP
M2222249/17777993/1215415338653618223631/61884412222894400566751/307499834094159465282217217 : 369CDAA403CBAA3C
PRP proof power = 7
PRP: Verified
Proof certified good
2025-04-10TJAOIF-ECM
Factor: 307499834094159465282217217 / (ECM curve 6, B1=250000, B2=821598855, Edwards Sigma=4595264312893875)
2025-02-12Alvin BunkCERT
PRP Certification
Proof certified good
2025-02-12pilotpskC-PRP
M2222249/17777993/1215415338653618223631/61884412222894400566751 : 369CDAA403CBAA3C
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2025-02-07debrouxlF-ECM
Factor: 61884412222894400566751 / (ECM curve 40, B1=89735, B2=10319525, Sigma=411573275261727)
2023-01-23_p95holder_C-PRP
M2222249/17777993/1215415338653618223631 : 369CDAA403CBAA3C
PRP: Verified (Factored)
PRP without proof (not generated)
2023-01-21_p95holder_F-ECM
Factor: 1215415338653618223631 / (ECM curve 4, B1=50000, B2=5000000)
2017-10-27Oliver KruseC-PRP
M2222249/17777993 : 369CDAA403CBAA3C
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-12kkmrkkblmbrbkC-PRP
M2222249/17777993 : 369CDAA403CBAA3C
PRP: Verified (Factored)
PRP without proof (not generated)
2016-05-01alpertronNF-PM1
B1=500000, B2=15000000, E=12