100 720 831 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁷

TF target 2⁷⁶

P-1

B1 =	785000
B2 =	15307500

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-09-27	Ben Delo	A874B7E70B62022F	4141457	1	3

History

Date	User	Type	Result
2020-09-27	Ben Delo	CERT	PRP Certification CERT proof power = 8 Proof certified good
2020-09-27	Ben Delo	C-PRP	A874B7E70B62022F PRP proof power = 8 PRP: Verified Proof certified good
2020-08-09	Ryan Propper	NF-PM1	B1=785000, B2=15307500, E=6
2020-04-26	TheJudger	NF	no factor from 2^76 to 2^77
2020-04-26	TheJudger	NF	no factor from 2^75 to 2^76
2020-04-21	Team_Inspector	NF	no factor from 2^74 to 2^75
2020-02-03	ixfd64	NF	no factor from 2^72 to 2^74
2015-01-09	shauge	NF	no factor from 2^71 to 2^72
2013-09-06	ITS	NF	no factor from 2^70 to 2^71
2013-09-01	ITS	NF	no factor from 2^69 to 2^70
2013-08-28	ITS	NF	no factor from 2^68 to 2^69
2013-08-23	processinfo	NF	no factor from 2^67 to 2^68
2011-03-25	Craig Meyers	NF	no factor from 2^66 to 2^67
2011-02-09	Craig Meyers	NF	no factor from 2^65 to 2^66
2010-08-19	Richard	NF	no factor from 2^64 to 2^65
2010-02-01	1997rj7	NF	no factor from 2^63 to 2^64