5 974 999 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
69573910589050464943	20	65.9	2015-09-28 04:38:55

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-11-21	Wyrmie Lee	7E80EB858EBEC5B6	0
Verified (Factored)	2000-12-07	Stephen Wood	7E80EB858EBEC5B6	3061371

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	66A30F5BD7269645	1	0	1	3
Verified	2018-09-14	rucio	66A30F5BD7269645	1	1860253	1	3

History

Date	User	Type	Result
2022-06-22	LordJulius	NF	no factor from 2^62 to 2^63
2018-09-14	rucio	C-PRP	M5974999/69573910589050464943 : 66A30F5BD7269645 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M5974999/69573910589050464943 : 66A30F5BD7269645 PRP: Verified PRP without proof (not generated)
2015-09-28	snme2pm1	F	Factor: 69573910589050464943 / TF: 65-66*
2014-10-03	monst	NF	no factor from 2^64 to 2^65
2014-10-01	Nesowa	NF	no factor from 2^63 to 2^64
2010-12-08	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1155000, E=6