61 516 327 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 2⁷⁴

P-1

B1 =	685000
B2 =	685000

Status	Date	User	Residue	Shift
Unverified	2013-04-06	curtisc	BE342DFAFA7C08__	60530596

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-09-09	David Kevin Britt	6F751AF0450C7365	0	1	3
Verified	2021-11-30	_p95holder_	6F751AF0450C7365	3670609	1	3

History

Date	User	Type	Result
2021-11-30	_p95holder_	C-PRP	6F751AF0450C7365 PRP: Verified PRP without proof (not generated)
2021-11-19	techn1ciaN	NF	no factor from 2^74 to 2^75
2021-09-09	David Kevin Britt	C-PRP	6F751AF0450C7365 PRP proof power = 9 PRP: Verified PRP proof never uploaded
2016-03-05	-Anonymous-	NF	no factor from 2^73 to 2^74
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2013-04-06	curtisc	C-LL	BE342DFAFA7C08__
2013-02-16	curtisc	NF-PM1	B1=685000
2012-04-23	Jerry Hallett	NF	no factor from 2^69 to 2^73
2009-10-02	Sturle Sunde	NF	no factor from 2^68 to 2^69
2009-08-01	Misha O	NF	no factor from 2^67 to 2^68
2009-07-28	Misha O	NF	no factor from 2^66 to 2^67
2009-07-26	CJPage	NF	no factor from 2^65 to 2^66
2009-07-23	unconnected	NF	no factor from 2^64 to 2^65
2009-05-11	markr	NF	no factor from 2^63 to 2^64