2 583 011 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
5166023	7	22.3	old
11985171041	11	33.5	2008-07-14 20:25:09

ECM

Digits	B1	Curves
25	50000	119 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^68 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	FC9537FAC5EC312F	2	104079	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	FC9537FAC5EC312F	2	607536	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	M2583011/5166023/11985171041 : FC9537FAC5EC312F
2017-10-15	Oliver Kruse	C-PRP	M2583011/5166023/11985171041 : FC9537FAC5EC312F
2008-07-14	George Woltman	F-ECM	Factor: 11985171041

Username
Password