61 358 441 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 =	545000
B2 =	10627500

Status	Date	User	Residue	Shift
Verified	2014-04-15	curtisc	AB061004948B3667	40072915
Verified	2021-07-16	Egor K	AB061004948B3667	56242193

History

Date	User	Type	Result
2021-07-16	Egor K	C-LL	AB061004948B3667
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2014-04-15	curtisc	C-LL	AB061004948B3667
2013-06-20	Jerry Hallett	NF-PM1	B1=545000, B2=10627500, E=12
2013-06-17	Jerry Hallett	NF	no factor from 2^73 to 2^74
2013-01-26	RichD0	NF	no factor from 2^71 to 2^73
2011-11-04	Tom Duell	NF	no factor from 2^70 to 2^71
2011-11-04	Tom Duell	NF	no factor from 2^69 to 2^70
2009-07-23	-Anonymous-	NF	no factor from 2^68 to 2^69
2009-04-10	linded	NF	no factor from 2^67 to 2^68
2009-04-07	linded	NF	no factor from 2^66 to 2^67
2009-02-02	Sturle Sunde	NF	no factor from 2^65 to 2^66
2009-02-01	Sturle Sunde	NF	no factor from 2^64 to 2^65
2009-02-01	-Anonymous-	NF	no factor from 2^63 to 2^64