2 565 989 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 5 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
35923847	8	25.1	old
61583737	8	25.9	2008-07-14 20:25:04
651761207	9	29.3	2008-07-14 20:25:04
539370887801	12	39.0	2008-07-14 20:25:04
269940682825831	15	47.9	2014-03-21 11:52:47

ECM

Digits	B1	Curves
25	50000	121 / 280

Estimated T-Level: 22.2 ⓘ

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	A80821E0B4D3FF5D	5	1348674	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	A80821E0B4D3FF5D	5	1303479	5	3

History

Date	User	Type	Result
2023-01-25	USAFSS	NF-PM1	B1=231000, B2=246888180
2017-12-01	storm5510	C-PRP	M2565989/35923847/539370887801/61583737/651761207/269940682825831 : A80821E0B4D3FF5D
2017-10-15	Oliver Kruse	C-PRP	M2565989/35923847/539370887801/61583737/651761207/269940682825831 : A80821E0B4D3FF5D
2014-03-21	TJAOI	F	Factor: 269940682825831
2008-07-14	George Woltman	F-ECM	Factor: 651761207
2008-07-14	George Woltman	F-ECM	Factor: 61583737
2008-07-14	George Woltman	F-ECM	Factor: 539370887801