2 161 433 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
96766223977137039057497	23	76.4	2013-05-05 07:57:58

ECM

Digits	B1	Curves
25	50000	105 / 280

Estimated T-Level: 21.9 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John Shalamskas	EF9789810FCC9782	0
Verified (Factored)	1999-05-09	Kent Lee	EF9789810FCC9782	150915

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-09	Oliver Kruse	477A643859702FEB	1	0	1	3
Verified	2017-11-18	kkmrkkblmbrbk	477A643859702FEB	1	1999649	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	M2161433/96766223977137039057497 : 477A643859702FEB PRP: Verified PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2161433/96766223977137039057497 : 477A643859702FEB PRP: Verified PRP without proof (not generated)
2016-04-03	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2013-05-05	hiems	F-ECM	Factor: 96766223977137039057497
2011-01-22	markr	NF-PM1	B1=120000, B2=2340000, E=6
2011-01-15	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2010-11-02	Joss	NF-PM1	B1=20000
2009-01-07	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-05	Sturle Sunde	NF	no factor from 2^60 to 2^61