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
520607Factored
FactorDigitsBitsDate
505011848984964420172065.52009-07-27 00:01:07
ECM
DigitsB1Curves
2550000280 / 280
30250000218 / 640
Estimated T-Level: 26.7 ⓘ
TF below 2^84 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski32FA0
Verified (Factored)Claude Barbe6DE9C952227332FA0
Verified (Factored)Matt Horbal6DE9C952227332FA0
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-27Oliver Kruse783A9E5E2E1DBA831013
Verified2017-11-03kkmrkkblmbrbk783A9E5E2E1DBA83142035513
Unverified (Reliable)2020-04-19Oliver Kruse4AA19DB1648ECC__139102953
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-05-24happy5214NF-PP1
Start=2/7, B1=5000000, B2=365000000
2021-05-24happy5214NF-PM1
B1=10000000, B2=830000000
2020-04-19Oliver KruseC-PRP
M520607/50501184898496442017 : 4AA19DB1648ECC__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-03kkmrkkblmbrbkC-PRP
M520607/50501184898496442017 : 783A9E5E2E1DBA83
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M520607/50501184898496442017 : 783A9E5E2E1DBA83
PRP: Unverified (Reliable)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=1500000, B2=50000000, E=12
2009-07-27JimBaF-ECM
Factor: 50501184898496442017