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
2161843Factored
FactorDigitsBitsDate
314546945867931444.8old
131115298623494277628879612683.42023-01-24 15:09:45
ECM
DigitsB1Curves
255000092 / 280
Estimated T-Level: 21.6 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-09Oliver KruseECD3360EBAB54CD41013
Verified (Factored)2017-11-18kkmrkkblmbrbkECD3360EBAB54CD41181455813
Verified2023-01-24LordJulius2B34C1782EB668192152082953
History
DateUserTypeResult
2023-01-24Chalkey300CERT
PRP Certification
Proof certified good
2023-01-24LordJuliusC-PRP
M2161843/31454694586793/13111529862349427762887961 : 2B34C1782EB66819
PRP proof power = 7
PRP: Verified
Proof certified good
2023-01-24_p95holder_F-ECM
Factor: 13111529862349427762887961 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-18kkmrkkblmbrbkC-PRP
M2161843/31454694586793 : ECD3360EBAB54CD4
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-09Oliver KruseC-PRP
M2161843/31454694586793 : ECD3360EBAB54CD4
PRP: Verified (Factored)
PRP without proof (not generated)
2016-04-03alpertronNF-PM1
B1=500000, B2=15000000, E=12