40 743 817 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁷³

TF target 2⁷²

P-1

B1 =	670000
B2 =	670000

Status	Date	User	Residue	Shift
Verified	2009-07-07	-Anonymous-	B4477942AF3B25DE	37231357
Verified	2016-01-12	formaus	B4477942AF3B25DE	12632334

History

Date	User	Type	Result
2019-04-13	Sid & Andy	NF	no factor from 2^72 to 2^73
2016-01-12	formaus	C-LL	B4477942AF3B25DE
2015-05-29	el grocco	NF	no factor from 2^71 to 2^72
2013-12-04	ixfd64	NF	no factor from 2^68 to 2^71
2009-07-07	-Anonymous-	C-LL	B4477942AF3B25DE

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