2 159 291 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
7827938831245085067793	22	72.7	2009-12-01 04:34:55

ECM

Digits	B1	Curves
25	50000	27 / 280

Estimated T-Level: 20.5 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Matthew Douglass	767E3D44F7EA3091	0
Verified (Factored)	1999-02-07	Timothy Garnett	767E3D44F7EA3091	555836

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-09	Oliver Kruse	9A256CAC53722BBD	1	0	1	3
Verified	2017-11-18	kkmrkkblmbrbk	9A256CAC53722BBD	1	1098491	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-18	kkmrkkblmbrbk	C-PRP	M2159291/7827938831245085067793 : 9A256CAC53722BBD PRP: Verified PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2159291/7827938831245085067793 : 9A256CAC53722BBD PRP: Verified PRP without proof (not generated)
2016-04-01	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2009-12-01	SubPrime	F-ECM	Factor: 7827938831245085067793
2009-01-07	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61