2 622 293 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
15733759	8	23.9	old
7945547791	10	32.9	2008-07-14 20:29:11

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	61 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-17	Oliver Kruse	C3A6EFCE6BC0479F	2	1898681	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	C3A6EFCE6BC0479F	2	1913173	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	storm5510	C-PRP	M2622293/15733759/7945547791 : C3A6EFCE6BC0479F
2017-10-17	Oliver Kruse	C-PRP	M2622293/15733759/7945547791 : C3A6EFCE6BC0479F
2008-07-14	George Woltman	F-ECM	Factor: 7945547791

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