99 990 049 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁷

TF target 2⁷⁶

P-1

B1 =	835000
B2 =	17117500

Status	Date	User	Residue	Shift	Software
Verified	2016-12-30	Qingkong	5775EBF526D7C521	33063657	Windows 64-bit,Prime95,v28.9,build 2
Verified	2021-09-29	Yxinity	5775EBF526D7C521	49092183	Windows 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2021-09-29	Yxinity	C-LL	5775EBF526D7C521
2020-03-19	Architects Cubed	NF	no factor TF: 76-77
2017-05-14	James Heinrich	NF-PM1	B1=835000, B2=17117500, E=6
2017-05-02	James Heinrich	NF	no factor TF: 75-76
2017-05-01	James Heinrich	NF	no factor TF: 74-75
2016-12-30	Qingkong	C-LL	5775EBF526D7C521
2016-10-20	Qingkong	NF	no factor TF: 73-74
2014-09-15	Jacques MOLNE	NF	no factor TF: 72-73
2014-09-15	Jacques MOLNE	NF	no factor TF: 71-72
2014-09-15	Jacques MOLNE	NF	no factor TF: 70-71
2014-04-23	Asan2014	NF	no factor TF: 69-70
2014-04-23	munsun_jang	NF	no factor TF: 68-69
2014-04-16	Carsten Kossendey	NF	no factor TF: 67-68
2013-07-30	wuhongyi	NF	no factor TF: 66-67
2012-12-24	c10ck3r	NF-PM1	B1=1100000
2012-04-03	Jimmy Brüggemann	NF	no factor TF: 65-66
2010-10-30	1997rj7	NF	no factor TF: 64-65