40 312 969 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 2⁷⁵

TF target 2⁷²

P-1

B1 =	445000
B2 =	11125000

Status	Date	User	Residue	Shift
Verified	2008-09-16	C. Cooper / S. Boone	592A8E0940E16F55	16863600
Verified	2017-04-02	Henry and Steve Fleming	592A8E0940E16F55	29494600

History

Date	User	Type	Result
2020-10-27	Sid & Andy	NF	no factor from 2^74 to 2^75
2019-12-19	Sid & Andy	NF	no factor from 2^73 to 2^74
2019-10-06	-Anonymous-	NF	no factor from 2^72 to 2^73
2017-04-02	Henry and Steve Fleming	C-LL	592A8E0940E16F55
2017-02-26	Bruno Victal	NF-PM1	B1=445000, B2=11125000, E=12
2015-03-08	Xyzzy	NF	no factor from 2^71 to 2^72
2014-12-23	Sid & Andy	NF	no factor from 2^70 to 2^71
2014-12-22	Andrew B	NF	no factor from 2^69 to 2^70