85 574 777 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	2019-07-31	patgie	30995D35AFA331__	8205130	Windows 64-bit,Prime95,v29.8,build 3

History

Date	User	Type	Result
2023-03-09	Mark Rose	NF-PM1	B1=403000, B2=61745250
2019-07-31	patgie	C-LL	30995D35AFA331__
2019-04-28	ATH	NF	no factor TF: 63-64
2019-04-28	ATH	NF	no factor TF: 1-63
2018-04-25	Yxinity	NF-PM1	B1=780000
2017-08-02	electron1897	NF	no factor TF: 75-76
2017-03-10	apocalypse	NF	no factor TF: 74-75
2017-03-10	apocalypse	NF	no factor TF: 71-72
2017-03-10	apocalypse	NF	no factor TF: 72-73
2017-03-10	apocalypse	NF	no factor TF: 73-74
2013-07-19	Wouter Zelle	NF	no factor TF: 70-71
2013-06-20	frmar	NF	no factor TF: 69-70
2013-06-18	g0b	NF	no factor TF: 68-69
2013-06-17	g0b	NF	no factor TF: 67-68
2013-03-05	wangyun183	NF	no factor TF: 66-67
2013-03-01	wangyun183	NF	no factor TF: 65-66
2010-11-27	Architects Cubed	NF	no factor TF: 64-65