2 582 089 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
180746231	9	27.4	old
991522177	9	29.9	2008-07-14 20:25:09

ECM

Digits	B1	Curves
25	50000	167 / 280

Estimated T-Level: 23.0 ⓘ

TF below 2^71 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	20F7C6559F31103A	2	2159293	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	20F7C6559F31103A	2	793602	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	M2582089/180746231/991522177 : 20F7C6559F31103A
2017-10-15	Oliver Kruse	C-PRP	M2582089/180746231/991522177 : 20F7C6559F31103A
2008-07-14	George Woltman	F-ECM	Factor: 991522177

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