6 977 329 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 =	12143000
B2 =	142401839580

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

Status	Date	User	Residue	Shift
Bad	1999-04-02	Marc Getty / Phil Fizur	0D6B9AB605C8C2FC	0
Verified	2001-09-30	Lars Lindley	D81D27195C5517FF	6672672
Verified	2001-11-10	Ing. Pavel PaJaSoft Janousek	D81D27195C5517FF	5959016

History

Date	User	Type	Result
2024-02-24	Jason Lynch	NF-PM1	B1=12143000, B2=142401839580
2021-11-23	Seth_Tr	NF-PM1	B1=4000000, B2=110000000, E=12
2021-09-28	SRBase	NF	no factor from 2^71 to 2^72
2021-09-06	SRBase	NF	no factor from 2^70 to 2^71
2021-08-09	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
2018-02-27	-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
2011-11-30	James Heinrich	NF-PM1	B1=135000, B2=2835000, E=6