2 548 591 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
8563265761	10	33.0	old
867753927937073	15	49.6	2014-05-07 12:40:53

ECM

Digits	B1	Curves
25	50000	147 / 280

Estimated T-Level: 22.6 ⓘ

TF below 2^70 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	DF18108548ABF0F3	2	1111350	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	DF18108548ABF0F3	2	375641	5	3

History

Date	User	Type	Result
2022-08-26	USAFSS	NF-PM1	B1=300000, B2=259451010
2017-12-01	storm5510	C-PRP	M2548591/8563265761/867753927937073 : DF18108548ABF0F3
2017-10-14	Oliver Kruse	C-PRP	M2548591/8563265761/867753927937073 : DF18108548ABF0F3
2014-05-07	TJAOI	F	Factor: 867753927937073

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