2 497 067 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
1081516466126861687844513433	28	89.8	2014-12-13 01:19:22

ECM

Digits	B1	Curves
25	50000	37 / 280

Estimated T-Level: 20.7 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Les	B0CD879F1C169FB1	0
Verified (Factored)	1999-05-02	Paul Evertson	B0CD879F1C169FB1	1459912

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-14	kkmrkkblmbrbk	884EE12B18578DEB	1	2254314	5	3
Verified	2017-11-07	Oliver Kruse	884EE12B18578DEB	1	2450330	5	3

P-1 factors

Date	Factor	B1	B2
2014-12-13	1081516466126861687844513433	2382500	85770100

History

Date	User	Type	Result
2022-03-10	LordJulius	NF	no factor from 2^1 to 2^60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-07	Oliver Kruse	C-PRP	M2497067/1081516466126861687844513433 : 884EE12B18578DEB PRP: Verified PRP without proof (not generated)
2017-10-14	kkmrkkblmbrbk	C-PRP	M2497067/1081516466126861687844513433 : 884EE12B18578DEB PRP: Verified PRP without proof (not generated)
2014-12-13	mikr	F-PM1	Factor: 1081516466126861687844513433 / (P-1, B1=2382500, B2=85770100, E=12)
2014-09-10	Joss	NF-PM1	B1=120704
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-11	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-25	Oscar Östlin	NF-PM1	B1=95000, B2=1971250, E=6
2010-12-22	Joss	NF-PM1	B1=20000
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61