61 602 553 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 2⁷⁶

TF target 2⁷⁴

P-1

B1 =	585000
B2 =	12138750

Status	Date	User	Residue	Shift
Unverified	2014-04-17	GlennR	90EB0048AC078E__	45669472

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-09-29	adamgm	CCA7CAC02F9DB29B	0	1	3
Verified	2021-10-07	_p95holder_	CCA7CAC02F9DB29B	38782676	1	3

History

Date	User	Type	Result
2021-10-07	_p95holder_	C-PRP	CCA7CAC02F9DB29B PRP: Verified PRP without proof (not generated)
2021-09-29	adamgm	C-PRP	CCA7CAC02F9DB29B PRP: Verified PRP without proof (not generated)
2020-06-08	-Anonymous-	NF	no factor from 2^75 to 2^76
2020-05-19	-Anonymous-	NF	no factor from 2^74 to 2^75
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2014-04-17	GlennR	C-LL	90EB0048AC078E__
2013-07-17	A_Savchenko	NF	no factor from 2^73 to 2^74
2013-02-18	Nesowa	NF-PM1	B1=585000, B2=12138750, E=12
2013-02-14	ixfd64	NF	no factor from 2^71 to 2^73
2013-02-02	Xyzzy	NF	no factor from 2^70 to 2^71
2011-11-22	Taxythingy	NF	no factor from 2^69 to 2^70
2010-02-14	Martin Prusa	NF	no factor from 2^68 to 2^69
2010-02-09	-Anonymous-	NF	no factor from 2^67 to 2^68
2010-02-09	-Anonymous-	NF	no factor from 2^66 to 2^67
2009-12-08	Bryn Pugh-Jones	NF	no factor from 2^65 to 2^66
2009-12-03	Nathan Edington	NF	no factor from 2^64 to 2^65
2009-06-04	Architects Cubed	NF	no factor from 2^63 to 2^64