84 561 401 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 =	670000
B2 =	11222500

Status	Date	User	Residue	Shift	Software
Unverified	2019-04-15	patgie	85F06857C8A6E1__	70187375	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2019-04-15	patgie	C-LL	85F06857C8A6E1__
2017-11-28	Doug Rhea	NF-PM1	B1=670000, B2=11222500
2017-05-28	electron1897	NF	no factor TF: 75-76
2017-05-28	electron1897	NF	no factor TF: 74-75
2017-02-10	-anonymous-	NF	no factor TF: 72-73
2017-02-10	-anonymous-	NF	no factor TF: 73-74
2017-02-10	-anonymous-	NF	no factor TF: 71-72
2014-09-13	SMoffat	NF	no factor TF: 70-71
2013-08-20	Robish	NF	no factor TF: 69-70
2013-08-19	Robish	NF	no factor TF: 68-69
2013-08-18	Robish	NF	no factor TF: 67-68
2013-08-18	Robish	NF	no factor TF: 66-67
2012-09-13	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-01	Architects Cubed	NF	no factor TF: 64-65