99 163 447 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 =	500000
B2 =	15000000

Status	Date	User	Residue	Shift	Software
Verified	2020-03-26	curtisc	FD4C94FFCC3C6C6A	89434200	Windows Service,Prime95,v29.8,build 3
Verified	2026-03-04	Greg	FD4C94FFCC3C6C6A	0	Linux64,prpll,v46386d0

History

Date	User	Type	Result
2026-03-04	Greg	C-LL	FD4C94FFCC3C6C6A
2020-03-26	curtisc	C-LL	FD4C94FFCC3C6C6A
2019-11-15	kracker	NF-PM1	B1=500000, B2=15000000
2019-11-10	TheJudger	NF	no factor TF: 76-77
2019-11-10	TheJudger	NF	no factor TF: 73-74
2019-11-10	TheJudger	NF	no factor TF: 74-75
2019-11-10	TheJudger	NF	no factor TF: 75-76
2019-05-04	Niels_Mache_Nextcloud	NF	no factor TF: 72-73
2016-12-25	monst	NF	no factor TF: 71-72
2014-07-02	SMoffat	NF	no factor TF: 70-71
2014-04-25	Smok_bmv	NF	no factor TF: 69-70
2014-04-25	Smok_bmv	NF	no factor TF: 68-69
2014-04-16	Carsten Kossendey	NF	no factor TF: 66-68
2013-02-09	Jimmy Brüggemann	NF	no factor TF: 65-66
2011-01-03	1997rj7	NF	no factor TF: 64-65