71 329 547 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 =	660000
B2 =	13860000

Status	Date	User	Residue	Shift	Software
Verified	2017-03-11	osmystatocny	500ADE5F39BA4ECA	53810022	Windows 64-bit,Prime95,v28.9,build 2
Verified	2025-01-21	antkh	500ADE5F39BA4ECA	60579832	Windows,Prime95,v25.11,build 2
Verified	2025-01-21	Naegi Makoto	500ADE5F39BA4ECA	28595548	Windows 64-bit,Prime95,v30.19,build 15

History

Date	User	Type	Result
2025-01-21	Naegi Makoto	C-LL	500ADE5F39BA4ECA
2025-01-21	antkh	C-LL	500ADE5F39BA4ECA
2017-03-11	osmystatocny	C-LL	500ADE5F39BA4ECA
2016-07-22	-anonymous-	NF	no factor TF: 74-75
2015-01-18	TheJudger	NF-PM1	B1=660000, B2=13860000, E=12
2014-11-23	megavink	NF	no factor TF: 73-74
2014-11-23	megavink	NF	no factor TF: 72-73
2014-11-23	megavink	NF	no factor TF: 71-72
2014-05-01	HBendtz	NF	no factor TF: 70-71
2012-11-15	-anonymous-	NF	no factor TF: 69-70
2010-05-08	-anonymous-	NF	no factor TF: 68-69
2010-04-25	GrunwalderGIMP	NF	no factor TF: 67-68
2010-04-24	eon_blue_apocalypse	NF	no factor TF: 66-67
2010-04-21	ekrumme	NF	no factor TF: 65-66
2010-03-18	gpulcini	NF	no factor TF: 64-65
2008-10-07	Wojciech Florek	NF	no factor TF: 1-64