2 376 809 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
151114997959775838281	21	67.0	2015-06-21 21:39:12

ECM

Digits	B1	Curves
25	50000	68 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Zach Pierce	BF603429255922E7	0
Verified (Factored)		Marco Voerman	BF603429255922E7	0
Verified (Factored)	1999-04-13	M. Medenis	BF603429255922E7	676555

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	F3BCEC7B3FF23CF5	1	0	1	3
Verified	2017-11-02	Oliver Kruse	F3BCEC7B3FF23CF5	1	1669061	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-02	Oliver Kruse	C-PRP	M2376809/151114997959775838281 : F3BCEC7B3FF23CF5 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2376809/151114997959775838281 : F3BCEC7B3FF23CF5 PRP: Verified PRP without proof (not generated)
2015-06-21	guru	F-ECM	Factor: 151114997959775838281 / (ECM curve 1, B1=50000, B2=5000000)
2015-03-09	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-09	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-10	Joss	NF-PM1	B1=127004
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-05-31	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-28	markr	NF-PM1	B1=100000, B2=2025000, E=6
2010-11-15	Joss	NF-PM1	B1=20000
2010-11-07	Joss	NF-PM1	B1=15000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61