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
1859269Factored
FactorDigitsBitsDate
147859743084071443.7old
72941103986011706638012272.62021-06-17 23:37:49
831559047357680511867173093992996.12021-08-13 08:31:25
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-04Oliver Kruse8DB17ED8207AA0FA1013
Verified (Factored)2017-11-07kkmrkkblmbrbk8DB17ED8207AA0FA1133934113
Verified (Factored)2021-06-19kutens2FF90FAAE45588FA2102341753
Verified2021-08-13SRJ28772FF90FAAE45588FA369388553
History
DateUserTypeResult
2021-08-13curtiscCERT
PRP Certification
Proof certified good
2021-08-13SRJ2877C-PRP
M1859269/14785974308407/7294110398601170663801/83155904735768051186717309399 : 2FF90FAAE45588FA
PRP proof power = 7
PRP: Verified
Proof certified good
2021-08-13TJAOIF-ECM
Factor: 83155904735768051186717309399 / (ECM curve 28, B1=50000, B2=6600000)
2021-06-19WeakForceBosonCERT
PRP Certification
Proof certified good
2021-06-19kutensC-PRP
M1859269/14785974308407/7294110398601170663801 : 2FF90FAAE45588FA
PRP proof power = 7
PRP: Verified (Factored)
Proof certified good
2021-06-17_p95holder_F-ECM
Factor: 7294110398601170663801 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-07kkmrkkblmbrbkC-PRP
M1859269/14785974308407 : 8DB17ED8207AA0FA
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1859269/14785974308407 : 8DB17ED8207AA0FA
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12