65 088 449 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 =	580000
B2 =	10295000

Status	Date	User	Residue	Shift	Software
Verified	2014-12-02	Kyle Z Schmidt	5438A5BE81E9B655	19287912	Windows 64-bit,Prime95,v28.5,build 2
Verified	2022-12-12	Ryan Propper	5438A5BE81E9B655	49541050	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2022-12-12	Ryan Propper	C-LL	5438A5BE81E9B655
2022-09-15	Richard Thomas	NF	no factor TF: 74-75
2016-03-28	Mark Rose	NF	no factor TF: 60-64
2014-12-02	Kyle Z Schmidt	C-LL	5438A5BE81E9B655
2013-10-09	Jwb52z	NF-PM1	B1=580000, B2=10295000
2013-10-04	SWL551	NF	no factor TF: 73-74
2013-09-28	Kyle Askine	NF	no factor TF: 72-73
2013-09-27	Kyle Askine	NF	no factor TF: 71-72
2012-06-08	sikafarmi_rendering_farm	NF	no factor TF: 70-71
2012-01-23	ITS	NF	no factor TF: 69-70
2009-11-10	tmorrow	NF	no factor TF: 68-69
2009-11-07	tmorrow	NF	no factor TF: 67-68
2009-11-05	Sturle Sunde	NF	no factor TF: 66-67
2009-11-03	Sturle Sunde	NF	no factor TF: 65-66
2009-11-02	-anonymous-	NF	no factor TF: 64-65
2004-02-23	1997rj7	NF	no factor TF: 1-60
2003-10-31	Gordon Spence	NF	no factor TF: 1-59