44 163 521 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 2⁷³

TF target 2⁷²

P-1

B1 =	510000
B2 =	9817500

Status	Date	User	Residue	Shift	Software
Verified	2009-01-16	Kyle Z Schmidt	223C7FB2E2EAAE60	9457314	Windows,Prime95,v24 final,(aka Wc1)
Verified	2018-05-21	George Woltman	223C7FB2E2EAAE60	17453580	Mac OS X 64-bit,Prime95,v29.4,build 5

History

Date	User	Type	Result
2018-05-21	George Woltman	C-LL	223C7FB2E2EAAE60
2018-02-26	ktony	NF	no factor TF: 72-73
2016-02-23	Mark Rose	NF	no factor TF: 62-63
2015-10-02	-anonymous-	NF	no factor TF: 71-72
2015-10-02	-anonymous-	NF	no factor TF: 70-71
2015-05-08	LaurV	NF	no factor TF: 69-70
2014-02-05	LaurV	NF	no factor TF: 68-69
2009-01-16	Kyle Z Schmidt	C-LL	223C7FB2E2EAAE60
2008-11-18	Kyle Z Schmidt	NF-PM1	B1=510000, B2=9817500
2008-11-10	Kyle Z Schmidt	NF-PM1	B1=510000, B2=9817500
2007-10-17	benthomas	NF	no factor TF: 63-64
2007-10-17	benthomas	NF	no factor TF: 65-66
2007-10-17	benthomas	NF	no factor TF: 66-67
2007-10-17	benthomas	NF	no factor TF: 67-68
2007-10-17	benthomas	NF	no factor TF: 64-65
2004-08-06	dave_0273	NF	no factor TF: 1-62