6 974 999 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 2⁷²

TF target 2⁶⁷

P-1

B1 =	14721000
B2 =	128447168850

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

Status	Date	User	Residue	Shift
Verified	1999-10-29	Ed Olson	98B43BB973D94AE0	1052546
Bad	2002-07-20	Lech Bartlomiejczyk	7402999615B8B3C1	6949893
Verified	2002-09-22	Ars Technica Team Prime Rib	98B43BB973D94AE0	6063435

History

Date	User	Type	Result
2024-02-28	Jason Lynch	NF-PM1	B1=14721000, B2=128447168850
2021-11-22	Seth_Tr	NF-PM1	B1=4000000, B2=110000000, E=12
2021-09-25	SRBase	NF	no factor from 2^71 to 2^72
2021-09-07	SRBase	NF	no factor from 2^70 to 2^71
2021-08-08	takahashi	NF	no factor from 2^69 to 2^70
2020-04-24	TJAOI	NF	no factor from 2^68 to 2^69
2020-01-29	takahashi	NF-PM1	B1=600000, B2=12000000, E=12
2018-02-26	-Anonymous-	NF	no factor from 2^67 to 2^68
2016-04-26	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-07-03	VictordeHollander	NF	no factor from 2^65 to 2^66
2014-02-15	lycorn	NF	no factor from 2^64 to 2^65
2014-02-09	Nesowa	NF	no factor from 2^63 to 2^64
2011-12-08	James Heinrich	NF-PM1	B1=135000, B2=2835000, E=6