66 451 901 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	595000
B2 =	11900000

Status	Date	User	Residue	Shift	Software
Verified	2015-03-29	Kyle Z Schmidt	012C70059B25F9EC	48648071	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-09-25	-anonymous-	012C70059B25F9EC	47876906	Windows 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2023-09-25	-anonymous-	C-LL	012C70059B25F9EC
2015-03-29	Kyle Z Schmidt	C-LL	012C70059B25F9EC
2015-02-28	gcardona	NF	no factor TF: 74-75
2014-08-03	Brian Chan	NF-PM1	B1=595000, B2=11900000, E=6
2014-07-28	Chuck	NF	no factor TF: 73-74
2014-04-18	Axelsson	NF	no factor TF: 71-72
2014-04-18	Axelsson	NF	no factor TF: 72-73
2012-07-10	Jaeckel	NF	no factor TF: 70-71
2012-02-08	NoWhereMan	NF	no factor TF: 69-70
2009-12-26	sunithaya	NF	no factor TF: 68-69
2009-12-13	Gymnasium_Raubling	NF	no factor TF: 67-68
2009-12-08	mansky	NF	no factor TF: 66-67
2009-12-03	steinrar	NF	no factor TF: 65-66
2009-12-01	majorjameshannah	NF	no factor TF: 64-65
2009-04-05	1997rj7	NF	no factor TF: 1-64