85 587 923 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	2019-10-04	ANONYMOUS	6A27083BD58972__	4859858	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2023-03-09	Mark Rose	NF-PM1	B1=403000, B2=61745250
2019-10-04	ANONYMOUS	C-LL	6A27083BD58972__
2019-04-28	ATH	NF	no factor TF: 63-64
2019-04-28	ATH	NF	no factor TF: 1-63
2018-05-29	Yxinity	NF-PM1	B1=780000
2017-09-24	TheJudger	NF	no factor TF: 75-76
2017-09-22	Brian Beuning	NF	no factor TF: 74-75
2017-04-21	-anonymous-	NF	no factor TF: 73-74
2017-02-28	Judge Hale	NF	no factor TF: 72-73
2017-02-28	Judge Hale	NF	no factor TF: 71-72
2013-11-17	jwdenney	NF	no factor TF: 70-71
2013-06-21	-anonymous-	NF	no factor TF: 69-70
2013-06-14	PascalBieri	NF	no factor TF: 68-69
2013-03-05	SMoffat	NF	no factor TF: 67-68
2013-03-05	SMoffat	NF	no factor TF: 66-67
2013-03-04	wangyun183	NF	no factor TF: 65-66
2010-11-27	Architects Cubed	NF	no factor TF: 64-65