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
53878507TF
No factors below 274
TF target 273
P-1
B1 = 1220000
B2 = 40260000
LL
StatusDateUserResidueShift
Bad2012-08-21-Anonymous-00000000000000000
Verified2012-08-28Jerry Hallett5CDB10CCE6AB81321415856
Verified2014-11-09MadPoo5CDB10CCE6AB813216417392
History
DateUserTypeResult
2014-11-09MadPooC-LL
5CDB10CCE6AB8132
2012-08-28Jerry HallettC-LL
5CDB10CCE6AB8132
2012-08-23Jerry HallettNF-PM1
B1=1220000, B2=40260000, E=12
2012-08-22Jerry HallettNF
no factor from 2^72 to 2^74
2012-08-21-Anonymous-P-LL
M53878507 is prime!
2012-04-29bcp19NF
no factor from 2^71 to 2^72
2011-07-09kdgehmanNF
no factor from 2^70 to 2^71
2011-05-17dslNF
no factor from 2^69 to 2^70
2011-04-12MarzbugNF
no factor from 2^68 to 2^69
2011-04-05Matt PerryNF-PM1
B1=650000, B2=19012500
2009-05-06egwinNF
no factor from 2^67 to 2^68
2009-02-21flying_pizzaNF
no factor from 2^66 to 2^67
2009-02-20rx7350NF
no factor from 2^65 to 2^66
2009-02-20Old DufferNF
no factor from 2^64 to 2^65
2008-08-25-Anonymous-NF
no factor to 2^64