4 768 607 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷¹

TF target 2⁶⁵

P-1

B1 =	8000000
B2 =	10754829540

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

Status	Date	User	Residue	Shift
Verified	1998-06-07	Bruce Mitchell	809217AFCB40CA19	0
Verified	2000-04-12	Brian Spearman	809217AFCB40CA19	3938378

History

Date	User	Type	Result
2023-02-14	Sid & Andy	NF-PM1	B1=8000000, B2=10754829540
2023-02-12	Stef42	NF-PM1	B1=4000000, B2=5141565000
2021-08-22	SRBase	NF	no factor from 2^70 to 2^71
2021-08-17	SRBase	NF	no factor from 2^69 to 2^70
2021-04-26	TJAOI	NF	no factor from 2^68 to 2^69
2018-09-24	Yxinity	NF	no factor from 2^67 to 2^68
2017-12-11	Yxinity	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^61
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-07-15	snme2pm1	NF	no factor from 2^65 to 2^66
2015-01-09	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-09	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-10-01	Squeeky_Squirrel	NF-PM1	B1=165000, B2=4166250, E=6
2011-11-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-05-25	markr	NF	no factor from 2^61 to 2^62
2009-09-05	Carsten Kossendey	NF-PM1	B1=30000, B2=412500