61 660 787 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
Verified	2015-10-21	James D-P	8B3A19EC4123C322	1587713
Verified	2021-07-15	Dmitriy Degtiarev	8B3A19EC4123C322	10876240

History

Date	User	Type	Result
2021-07-15	Dmitriy Degtiarev	C-LL	8B3A19EC4123C322
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
2015-10-21	James D-P	C-LL	8B3A19EC4123C322
2014-11-06	Jerry Hallett	NF	no factor from 2^73 to 2^74
2013-02-17	Just factoring!	NF-PM1	B1=585000, B2=12138750, E=12
2013-02-15	SWL551	NF	no factor from 2^72 to 2^73
2013-02-11	kdgehman	NF	no factor from 2^71 to 2^72
2013-02-11	kdgehman	NF	no factor from 2^70 to 2^71
2011-11-17	Zopper	NF	no factor from 2^69 to 2^70
2009-12-10	Net_Force	NF	no factor from 2^68 to 2^69
2009-12-01	Net_Force	NF	no factor from 2^67 to 2^68
2009-07-20	S00030	NF	no factor from 2^66 to 2^67
2009-02-09	Cereal Business	NF	no factor from 2^65 to 2^66
2009-02-08	Cereal Business	NF	no factor from 2^64 to 2^65
2009-02-06	-Anonymous-	NF	no factor from 2^63 to 2^64