2 406 307 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 2⁷⁰

TF target 2⁶³

TF below 2^80 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	9100000
B2 =	46765014450

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	85 / 640

Estimated T-Level: 25.7 ⓘ

Status	Date	User	Residue	Shift
Verified		Simon Burge	540666C912F59FEC	0
Bad		fred	7839B65518EE2CE6	0
Verified	1999-05-23	Stephen Wood	540666C912F59FEC	2112595
Verified	2018-05-18	kkmrkkblmbrbk	540666C912F59FEC	1199164

History

Date	User	Type	Result
2023-08-02	Sid & Andy	NF-PM1	B1=9100000, B2=46765014450
2023-05-30	Joss	NF-PM1	B1=1000000, B2=3800026230
2022-11-28	Joss	NF-PM1	B1=1000000, B2=571741170
2019-03-12	Yxinity	NF	no factor from 2^69 to 2^70
2019-02-09	Anton Repko	NF	no factor from 2^67 to 2^69
2018-05-18	kkmrkkblmbrbk	C-LL	540666C912F59FEC
2017-06-29	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-10-21	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-02-28	mikr	NF-PM1	B1=3102822, B2=43439508, E=12
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-03	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-22	markr	NF-PM1	B1=95000, B2=1923750, E=6
2010-11-16	Joss	NF-PM1	B1=20000
2010-11-09	Joss	NF-PM1	B1=15000
2009-01-14	Sturle Sunde	NF	no factor from 2^60 to 2^61