2 589 887 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
6878392827143	13	42.6	old

ECM

Digits	B1	Curves
25	50000	130 / 280

Estimated T-Level: 22.3 ⓘ

TF below 2^69 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	9C41B51C3A940B2A	1	1693884	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	9C41B51C3A940B2A	1	1002176	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	M2589887/6878392827143 : 9C41B51C3A940B2A
2017-10-15	Oliver Kruse	C-PRP	M2589887/6878392827143 : 9C41B51C3A940B2A

Username
Password