2 238 947 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
6071765399115160697	19	62.4	2009-12-25 08:56:00

ECM

Digits	B1	Curves
25	50000	83 / 280

Estimated T-Level: 21.5 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		The Vanguard (Nelson Jones & Mohammad Malik & Anthony Joseph & Art Mandelin & Ed	7839C75D6CAA7AAD	0
Verified (Factored)	1999-02-21	Rob Hooft	7839C75D6CAA7AAD	409741

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-10	Oliver Kruse	81C90497CBBEC12B	1	0	1	3
Verified	2017-11-21	kkmrkkblmbrbk	81C90497CBBEC12B	1	1680478	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-21	kkmrkkblmbrbk	C-PRP	M2238947/6071765399115160697 : 81C90497CBBEC12B PRP: Verified PRP without proof (not generated)
2017-10-10	Oliver Kruse	C-PRP	M2238947/6071765399115160697 : 81C90497CBBEC12B PRP: Verified PRP without proof (not generated)
2016-04-22	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2009-12-25	Dmitry B. Khachaturov	F-ECM	Factor: 6071765399115160697
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61