61 425 649 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 =	530000
B2 =	9540000

Status	Date	User	Residue	Shift
Unverified	2014-06-18	cr_colorado	160782172E9A4F__	20767176

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-07-01	adamgm	3E295614D1D6084C	0	1	3
Verified	2021-07-07	_p95holder_	3E295614D1D6084C	10004322	1	3

History

Date	User	Type	Result
2021-07-07	_p95holder_	C-PRP	3E295614D1D6084C PRP: Verified PRP without proof (not generated)
2021-07-01	adamgm	C-PRP	3E295614D1D6084C PRP: Verified PRP without proof (not generated)
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2014-06-18	cr_colorado	C-LL	160782172E9A4F__
2013-06-26	markr	NF-PM1	B1=530000, B2=9540000
2013-06-25	gcardona	NF	no factor from 2^73 to 2^74
2013-01-26	Jerry Hallett	NF	no factor from 2^72 to 2^73
2013-01-26	Jerry Hallett	NF	no factor from 2^71 to 2^72
2013-01-26	Jerry Hallett	NF	no factor from 2^70 to 2^71
2011-11-20	bigbear3001	NF	no factor from 2^69 to 2^70
2010-02-18	Chad	NF	no factor from 2^68 to 2^69
2010-02-10	Chad	NF	no factor from 2^67 to 2^68
2010-02-01	S00030	NF	no factor from 2^66 to 2^67
2009-11-28	Sturle Sunde	NF	no factor from 2^65 to 2^66
2009-11-26	GrunwalderGIMP	NF	no factor from 2^64 to 2^65
2009-06-04	Architects Cubed	NF	no factor from 2^63 to 2^64