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

PrimeNet Exponent Status

Exponent Range:





MnDetails
109621
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
2723564438891238.0old
84241732704175483391772272.82008-08-26 20:12:04
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000728 / 1566
Estimated T-Level: 32.3
TF below 2^102 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
No proof (small exponent)
2017-09-22Oliver Kruse82B4DB6AAD8A5DA62013
Verified
No proof (small exponent)
2017-10-13kkmrkkblmbrbk82B4DB6AAD8A5DA623611713
Verified
No proof (small exponent)
2020-04-17Oliver KruseBA30E4F2D3C5E81B28981953
Verified
Not Uploaded
2022-04-15LordJuliusBA30E4F2D3C5E81B210039053
Verified
Certified Good
2022-11-11LordJuliusBA30E4F2D3C5E81B26950053
History
DateUserTypeResult
2026-02-12Jason LynchNF-PM1B1=418410000, B2=229338757688040
2025-12-17ViliamFNF-PM1B1=100000000, B2=2386922057520
2022-11-11T.TatekawaCERT
Proof certified good
2022-11-11LordJuliusC-PRPM109621/272356443889/8424173270417548339177 : BA30E4F2D3C5E81B
Proof Not Uploaded

Proof Power: 5

2022-05-07LordJuliusNFno factor TF: 62-63
2022-05-07LordJuliusNFno factor TF: 60-61
2022-05-07LordJuliusNFno factor TF: 61-62
2022-05-07LordJuliusNFno factor TF: 58-59
2022-05-07LordJuliusNFno factor TF: 59-60
2022-05-07LordJuliusNFno factor TF: 57-58
2022-04-15LordJuliusC-PRPM109621/272356443889/8424173270417548339177 : BA30E4F2D3C5E81B
Proof Not Uploaded

Proof Power: 5

2020-04-17Oliver KruseC-PRPM109621/272356443889/8424173270417548339177 : BA30E4F2D3C5E81B
2017-10-13kkmrkkblmbrbkC-PRPM109621/272356443889/8424173270417548339177 : 82B4DB6AAD8A5DA6
2017-09-22Oliver KruseC-PRPM109621/272356443889/8424173270417548339177 : 82B4DB6AAD8A5DA6
2017-09-21Oliver KruseC-PRPM109621/272356443889/8424173270417548339177 : 82B4DB6AAD8A5DA6
2016-12-10kkmrkkblmbrbkNF-PM1B1=100000000, B2=2000000000, E=12
2008-08-26-anonymous-F-ECMFactor: 8424173270417548339177