70 521 947 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 =	645000
B2 =	13222500

Status	Date	User	Residue	Shift	Software
Verified	2016-01-19	Jiri Lebl	DAB588CD037ADCBC	9570114	Linux 64-bit,Prime95,v28.7,build 1
Bad	2024-04-27	JirkaBo	B3A302F1F13879DE	15922583	Windows 64-bit,Prime95,v30.8,build 17
Verified	2024-05-02	Torchwood Institute	DAB588CD037ADCBC	41992946	Windows 64-bit,Prime95,v30.5,build 2

History

Date	User	Type	Result
2024-05-02	Torchwood Institute	C-LL	DAB588CD037ADCBC
2024-04-27	JirkaBo	C-LL	B3A302F1F13879DE
2016-01-19	Jiri Lebl	C-LL	DAB588CD037ADCBC
2015-12-20	TheJudger	NF	no factor TF: 74-75
2014-11-23	TheJudger	NF-PM1	B1=645000, B2=13222500, E=6
2014-11-08	NickOfTime	NF	no factor TF: 73-74
2014-11-07	NickOfTime	NF	no factor TF: 72-73
2014-09-27	srow7	NF	no factor TF: 71-72
2013-04-08	ITS	NF	no factor TF: 70-71
2010-05-02	ANONYMOUS	NF	no factor TF: 1-70
2010-04-24	GrunwalderGIMP	NF	no factor TF: 65-66
2010-02-21	Sturle Sunde	NF	no factor TF: 64-65
2008-11-24	Wojciech Florek	NF	no factor TF: 1-64
2007-09-28	Amperio	NF	no factor TF: 1-63