1 546 379 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
1355064406383994941775577626989438296921	40	130.0	2015-03-22 08:29:41

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Dwayne Towell	CCE351C4356465FE	0
Verified (Factored)	1998-10-25	Michael S. Keller	CCE351C4356465FE	1272356

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	6835B5232CF21975	1	0	1	3
Verified	2017-10-18	Oliver Kruse	6835B5232CF21975	1	528291	1	3

P-1 factors

Date	Factor	B1	B2
2015-03-22	1355064406383994941775577626989438296921	10000000	200000000

History

Date	User	Type	Result
2022-03-08	LordJulius	NF	no factor from 2^58 to 2^60
2017-10-18	Oliver Kruse	C-PRP	M1546379/1355064406383994941775577626989438296921 : 6835B5232CF21975 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1546379/1355064406383994941775577626989438296921 : 6835B5232CF21975 PRP: Verified PRP without proof (not generated)
2015-03-22	VictordeHollander	F-PM1	Factor: 1355064406383994941775577626989438296921 / (P-1, B1=10000000, B2=200000000, E=12)
2015-02-13	snme2pm1	NF	no factor from 2^64 to 2^65
2015-02-13	snme2pm1	NF	no factor from 2^63 to 2^64
2013-11-21	David Campeau	NF-PM1	B1=945000, B2=27405000, E=12
2011-02-03	James Heinrich	NF-PM1	B1=80000, B2=1340000, E=6
2010-06-02	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-27	Architects Cubed	NF	no factor from 2^60 to 2^61