2 487 773 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
59706553	8	25.8	old
656772073	9	29.3	2008-07-14 20:24:16

ECM

Digits	B1	Curves
25	50000	162 / 280

Estimated T-Level: 22.9 ⓘ

TF below 2^71 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)	2017-10-14	Oliver Kruse	8AEC325F0AAB138F	2	440533	5	3
Verified	PRP without proof (not generated)	2017-11-29	storm5510	8AEC325F0AAB138F	2	1889530	5	3

History

Date	User	Type	Result
2022-08-19	USAFSS	NF-PM1	B1=224000, B2=203668920
2017-11-29	storm5510	C-PRP	M2487773/59706553/656772073 : 8AEC325F0AAB138F
2017-10-14	Oliver Kruse	C-PRP	M2487773/59706553/656772073 : 8AEC325F0AAB138F
2008-07-14	George Woltman	F-ECM	Factor: 656772073

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