85 516 961 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	403000
B2 =	61745250

Status	Date	User	Residue	Shift	Software
Unverified	2019-07-25	patgie	D2CAC44855F26D__	68313135	Windows 64-bit,Prime95,v29.8,build 3

History

Date	User	Type	Result
2023-03-09	Mark Rose	NF-PM1	B1=403000, B2=61745250
2019-07-25	patgie	C-LL	D2CAC44855F26D__
2019-04-28	ATH	NF	no factor TF: 63-64
2019-04-28	ATH	NF	no factor TF: 1-63
2018-03-13	Yxinity	NF-PM1	B1=780000
2017-09-17	TheJudger	NF	no factor TF: 74-75
2017-09-17	TheJudger	NF	no factor TF: 75-76
2017-04-28	-anonymous-	NF	no factor TF: 73-74
2017-02-22	Judge Hale	NF	no factor TF: 71-72
2017-02-22	Judge Hale	NF	no factor TF: 72-73
2013-08-07	Robish	NF	no factor TF: 70-71
2013-06-24	frmar	NF	no factor TF: 69-70
2013-06-19	frmar	NF	no factor TF: 68-69
2013-06-17	g0b	NF	no factor TF: 67-68
2013-02-28	Freaks32	NF	no factor TF: 66-67
2013-02-28	wangyun183	NF	no factor TF: 65-66
2010-11-26	Architects Cubed	NF	no factor TF: 64-65