68 419 129 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 2⁷⁴

P-1

B1 =	625000
B2 =	12812500

Status	Date	User	Residue	Shift	Software
Verified	2016-02-08	Kyle Z Schmidt	A0831BA5FC4CE680	55380413	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-08-14	Ryan Propper	A0831BA5FC4CE680	4882881	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2023-08-14	Ryan Propper	C-LL	A0831BA5FC4CE680
2020-09-22	-anonymous-	NF	no factor TF: 76-77
2020-09-20	-anonymous-	NF	no factor TF: 75-76
2016-02-08	Kyle Z Schmidt	C-LL	A0831BA5FC4CE680
2016-01-14	endless_mike	NF	no factor TF: 74-75
2014-09-07	TheJudger	NF-PM1	B1=625000, B2=12812500, E=12
2014-08-31	TheJudger	NF	no factor TF: 73-74
2014-08-31	TheJudger	NF	no factor TF: 72-73
2014-07-21	Architects Cubed	NF	no factor TF: 71-72
2012-08-07	Clown_Royal	NF	no factor TF: 70-71
2012-03-06	JimBa	NF	no factor TF: 69-70
2010-06-20	Marzbug	NF	no factor TF: 68-69
2010-06-17	RMAC9.5	NF	no factor TF: 67-68
2010-06-13	RMAC9.5	NF	no factor TF: 66-67
2010-06-11	PVasilev	NF	no factor TF: 65-66
2010-01-16	Sturle Sunde	NF	no factor TF: 64-65
2008-10-21	-anonymous-	NF	no factor TF: 1-64
2002-03-10	Joss	NF	no factor TF: 1-57