2 000 633 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
252079759	9	27.9	old
21053665376767	14	44.3	2008-08-26 20:20:27

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	117 / 640

Estimated T-Level: 25.9 ⓘ

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

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-05	Oliver Kruse	58C5A8F2080390B0	2	0	1	3
Verified	2017-11-13	kkmrkkblmbrbk	58C5A8F2080390B0	2	1989630	1	3

History

Date	User	Type	Result
2022-11-25	USAFSS	NF-PM1	B1=650000, B2=730452492
2019-01-17	Joss	NF-PM1	B1=1000000, B2=10000000, E=12
2017-11-13	kkmrkkblmbrbk	C-PRP	M2000633/252079759/21053665376767 : 58C5A8F2080390B0 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2000633/252079759/21053665376767 : 58C5A8F2080390B0 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 21053665376767