64 980 791 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁴

TF target 2⁷⁴

P-1

B1 =	925000
B2 =	20812500

Status	Date	User	Residue	Shift
Unverified	2015-02-06	Yale Cohen	2F252E9AEB54CF__	47531188

Status	Date	User	Residue	Shift	Type	Base
Verified	2022-03-29	Conductor	E58383B417F1B1AF	21874353	1	3

History

Date	User	Type	Result
2022-03-30	curtisc	CERT	PRP Certification CERT proof power = 9 Proof certified good
2022-03-29	Conductor	C-PRP	E58383B417F1B1AF PRP proof power = 9 PRP: Verified Proof certified good
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^63
2015-02-06	Yale Cohen	C-LL	2F252E9AEB54CF__
2013-12-19	Jerry Hallett	NF-PM1	B1=925000, B2=20812500, E=6
2013-12-17	The Mawn	NF	no factor from 2^73 to 2^74
2013-12-17	The Mawn	NF	no factor from 2^72 to 2^73
2013-12-05	america64	NF	no factor from 2^71 to 2^72
2012-09-14	Zet_kor	NF	no factor from 2^70 to 2^71
2012-01-20	-Anonymous-	NF	no factor from 2^69 to 2^70
2010-06-03	-Anonymous-	NF	no factor from 2^68 to 2^69
2009-03-18	CPSlacker	NF	no factor from 2^67 to 2^68
2009-03-16	Roman Maznichenko	NF	no factor from 2^66 to 2^67
2009-03-16	Survivalist	NF	no factor from 2^65 to 2^66
2009-03-15	Survivalist	NF	no factor from 2^64 to 2^65
2009-03-15	kutens	NF	no factor from 2^63 to 2^64