16 811 549 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 2⁶⁹

P-1

B1 =	845000
B2 =	20702500

ECM

Digits	B1	Curves
25	50000	85 / 280

Estimated T-Level: 21.5 ⓘ

Status	Date	User	Residue	Shift
Verified		Guillermo Ballester Valor	23A0B8EE222146CA	0
Verified	2003-06-17	Mark S. Blanke	23A0B8EE222146CA	3933317
Verified	2003-06-17	George Woltman	23A0B8EE222146CA	7971791
Verified	2017-12-29	MadPoo	23A0B8EE222146CA	15638473

History

Date	User	Type	Result
2021-02-08	Yxinity	NF	no factor from 2^74 to 2^75
2021-01-21	Yxinity	NF	no factor from 2^73 to 2^74
2018-11-17	laxeye	NF	no factor from 2^72 to 2^73
2018-11-10	laxeye	NF	no factor from 2^71 to 2^72
2018-11-05	laxeye	NF	no factor from 2^70 to 2^71
2018-11-05	laxeye	NF	no factor from 2^10 to 2^65
2018-10-11	-Anonymous-	NF-PM1	B1=845000, B2=20702500, E=6
2017-12-29	MadPoo	C-LL	23A0B8EE222146CA
2016-03-09	ixfd64	NF	no factor from 2^69 to 2^70
2016-03-09	ixfd64	NF	no factor from 2^68 to 2^69
2016-03-08	ixfd64	NF	no factor from 2^67 to 2^68
2013-05-28	Richard B. Woods	NF	no factor from 2^66 to 2^67
2013-05-17	Richard B. Woods	NF	no factor from 2^65 to 2^66