2 566 567 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
1028926444033	13	39.9	old
3725448451739793719	19	61.7	2016-05-20 11:46:26

ECM

Digits	B1	Curves
25	50000	98 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 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)	2017-10-15	Oliver Kruse	1EC60C898FF7516B	2	1611754	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	1EC60C898FF7516B	2	2058538	5	3

History

Date	User	Type	Result
2022-08-30	USAFSS	NF-PM1	B1=480000, B2=423235890
2017-12-01	storm5510	C-PRP	M2566567/1028926444033/3725448451739793719 : 1EC60C898FF7516B
2017-10-15	Oliver Kruse	C-PRP	M2566567/1028926444033/3725448451739793719 : 1EC60C898FF7516B
2016-05-20	TJAOI	F	Factor: 3725448451739793719

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