Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnStatusDetails
4967Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
327823618.3old
399283681298230866605692375.1old
454769178906512136821063427656484146936940131.72020-09-14 05:41:57
TF
Trial Factored to 268
TF target 244
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000016040 / 40830
Estimated T-Level: 52.0 ⓘ
TF below 2^168 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver Kruse40C8C17B876F32862013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbk40C8C17B876F32862411513
Factored
No proof (small exponent)
2020-04-17Oliver KruseD821753292511CE02445853
Verified
No proof (small exponent)
2020-09-14M MillerD821753292511CE0390753
Verified
No proof (small exponent)
2020-09-14atrenchD821753292511CE03435353
History
DateUserTypeResult
2025-05-23masserNF-PP1Start=135/11, B1=2100000000, B2=2097900000000
2023-05-31-anonymous-NF-PM1B1=64000000000, B2=642189744639793350
2021-12-15Oliver KruseNF-PM1B1=1000000000, B2=1002849399191640
2021-12-14ANONYMOUSNF-PM1B1=101101101, B2=242002648447560
2020-09-14atrenchC-PRPM4967/327823/39928368129823086660569/4547691789065121368210634276564841469369 : D821753292511CE0
2020-09-14M MillerC-PRPM4967/327823/39928368129823086660569/4547691789065121368210634276564841469369 : D821753292511CE0
2020-09-14Alex KruppaF-ECMFactor: 4547691789065121368210634276564841469369 / ECM curve 42, B1=11000000, B2=1100000000, Montgomery Sigma=8654980198232701
2020-04-17Oliver KruseC-PRPM4967/327823/39928368129823086660569 : D821753292511CE0
2017-10-12kkmrkkblmbrbkC-PRPM4967/327823/39928368129823086660569 : 40C8C17B876F3286
2017-09-21Oliver KruseC-PRPM4967/327823/39928368129823086660569 : 40C8C17B876F3286
2017-09-21Oliver KruseC-PRPM4967/327823/39928368129823086660569 : 40C8C17B876F3286