42 685 549 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 2⁷⁶

TF target 2⁷²

P-1

B1 =	1500000
B2 =	45000000

Status	Date	User	Residue	Shift
Verified	2010-08-30	ANONYMOUS	F9AB46254DBC34A0	9427061
Verified	2016-10-16	ChavdarLalov	F9AB46254DBC34A0	40896547

History

Date	User	Type	Result
2021-06-28	-Anonymous-	NF	no factor from 2^75 to 2^76
2021-05-24	Yves de Wandelaar	NF	no factor from 2^74 to 2^75
2021-03-26	Sid & Andy	NF-PM1	B1=1500000, B2=45000000
2020-01-12	-Anonymous-	NF	no factor from 2^73 to 2^74
2018-10-09	Random GPUs	NF	no factor from 2^72 to 2^73
2016-10-16	ChavdarLalov	C-LL	F9AB46254DBC34A0
2015-09-01	-Anonymous-	NF	no factor from 2^71 to 2^72
2015-03-09	Mark Rose	NF	no factor from 2^70 to 2^71
2014-07-02	Grant McCracken	NF	no factor from 2^69 to 2^70
2014-02-24	Grant McCracken	NF	no factor from 2^68 to 2^69
2010-08-30	ANONYMOUS	C-LL	F9AB46254DBC34A0