4 451 893 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 4 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
1635367278407	13	40.6	old
326546485106791	15	48.2	2008-09-30 21:35:20
2398134609315073	16	51.1	2014-06-17 11:48:15
5537631411709703	16	52.3	2014-08-03 11:23:57

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	Number of known factors	Shift	Type	Base
Verified	2017-11-17	Oliver Kruse	8D9C1BD2FD258D64	4	4138441	5	3
Verified	2018-01-01	kkmrkkblmbrbk	8D9C1BD2FD258D64	4	3636207	5	3

History

Date	User	Type	Result
2021-08-06	Dylan Delgado	NF-PM1	B1=1000000, B2=71000000
2018-01-01	kkmrkkblmbrbk	C-PRP	M4451893/1635367278407/326546485106791/2398134609315073/5537631411709703 : 8D9C1BD2FD258D64 PRP: Verified PRP without proof (not generated)
2017-11-17	Oliver Kruse	C-PRP	M4451893/1635367278407/326546485106791/2398134609315073/5537631411709703 : 8D9C1BD2FD258D64 PRP: Verified PRP without proof (not generated)
2014-08-03	TJAOI	F	Factor: 5537631411709703
2014-06-17	TJAOI	F	Factor: 2398134609315073
2008-09-30	markr	F	Factor: 326546485106791