2 357 587 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 2⁶²

Factored

Factor	Digits	Bits	Date
150885569	9	27.2	old
155600743	9	27.2	2008-07-14 20:23:17

ECM

Digits	B1	Curves
25	50000	158 / 280

Estimated T-Level: 22.8 ⓘ

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)	2017-10-12	Oliver Kruse	2B39D86BE6F51EF1	2	0	1	3
Verified	PRP without proof (not generated)	2017-11-24	storm5510	2B39D86BE6F51EF1	2	2279578	1	3

History

Date	User	Type	Result
2018-04-27	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-24	storm5510	C-PRP	M2357587/150885569/155600743 : 2B39D86BE6F51EF1
2017-10-12	Oliver Kruse	C-PRP	M2357587/150885569/155600743 : 2B39D86BE6F51EF1
2008-07-14	George Woltman	F-ECM	Factor: 155600743

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