61 047 263 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 =	1000000
B2 =	20000000

Status	Date	User	Residue	Shift
Verified	2013-03-08	Frank Siwiec	7A2F7D0C49C690EA	45316898
Verified	2022-03-06	Andrew_and	7A2F7D0C49C690EA	16483619

History

Date	User	Type	Result
2022-03-06	Andrew_and	C-LL	7A2F7D0C49C690EA
2020-06-19	Tha	NF-PM1	B1=1000000, B2=20000000, E=12
2016-02-24	AirSquirrels	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2013-03-08	Frank Siwiec	C-LL	7A2F7D0C49C690EA
2013-02-09	Frank Siwiec	NF-PM1	B1=685000
2013-01-15	Axelsson	NF	no factor from 2^72 to 2^73
2013-01-14	Axelsson	NF	no factor from 2^71 to 2^72
2013-01-14	Axelsson	NF	no factor from 2^70 to 2^71
2012-03-21	lexatref	NF	no factor from 2^69 to 2^70
2009-09-10	ANONYMOUS	NF	no factor from 2^68 to 2^69
2009-02-10	Flash	NF	no factor from 2^67 to 2^68
2009-02-08	PHeede	NF	no factor from 2^66 to 2^67
2009-02-07	PHeede	NF	no factor from 2^65 to 2^66
2009-01-30	Sturle Sunde	NF	no factor from 2^64 to 2^65
2009-01-29	-Anonymous-	NF	no factor from 2^63 to 2^64