2 749 157 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
16494943	8	24.0	old
56731253838152167008577	23	75.6	2019-05-11 04:35:11

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-20	Oliver Kruse	CAE89120C7D014C0	1	2339940	5	3
Verified (Factored)	2017-12-05	kkmrkkblmbrbk	CAE89120C7D014C0	1	1861143	5	3
Verified	2019-05-12	artorollo	CAE89120C7D014C0	2	404970	5	3

P-1 factors

Date	Factor	B1	B2
2019-05-11	56731253838152167008577	30000	300000

History

Date	User	Type	Result
2023-01-27	USAFSS	NF-PM1	B1=288000, B2=226423890
2019-05-12	artorollo	C-PRP	M2749157/16494943/56731253838152167008577 : CAE89120C7D014C0 PRP: Verified PRP without proof (not generated)
2019-05-11	Joss	F-PM1	Factor: 56731253838152167008577 / (P-1, B1=30000, B2=300000)
2017-12-05	kkmrkkblmbrbk	C-PRP	M2749157/16494943 : CAE89120C7D014C0 PRP: Verified PRP without proof (not generated)
2017-10-20	Oliver Kruse	C-PRP	M2749157/16494943 : CAE89120C7D014C0 PRP: Verified PRP without proof (not generated)