2 540 887 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
125357201033	12	36.9	old
2717138038651330559	19	61.2	2016-04-12 11:43:04

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	131 / 640

Estimated T-Level: 26.0 ⓘ

TF below 2^81 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	68261B9256E5370A	2	1592817	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	68261B9256E5370A	2	1529932	5	3

History

Date	User	Type	Result
2022-08-24	USAFSS	NF-PM1	B1=300000, B2=259451010
2017-12-01	storm5510	C-PRP	M2540887/125357201033/2717138038651330559 : 68261B9256E5370A
2017-10-14	Oliver Kruse	C-PRP	M2540887/125357201033/2717138038651330559 : 68261B9256E5370A
2016-04-12	TJAOI	F	Factor: 2717138038651330559

Username
Password