2 005 919 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
461219833157727601	18	58.7	old
2649631661090255774953	22	71.2	2016-01-15 21:19:56
22823727429156916015895543	26	84.2	2022-11-28 12:51:04

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	161 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Chet Richards	F531FF7AFEB37F32	0
Verified (Factored)	1999-01-10	Jason Matunas	F531FF7AFEB37F32	207447

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	9F0B08CF9DF6CE00	2	0	1	3
Verified (Factored)	2017-10-20	Oliver Kruse	9F0B08CF9DF6CE00	2	1482341	1	3
Verified	2022-11-28	suika_predator	375112F74921235E	3	448358	5	3

P-1 factors

Date	Factor	B1	B2
2016-01-15	2649631661090255774953	500000	15000000

History

Date	User	Type	Result
2022-11-28	Linear_Petra	CERT	PRP Certification Proof certified good
2022-11-28	suika_predator	C-PRP	M2005919/461219833157727601/2649631661090255774953/22823727429156916015895543 : 375112F74921235E PRP proof power = 7 PRP: Verified Proof certified good
2022-11-28	TJAOI	F-ECM	Factor: 22823727429156916015895543
2017-10-20	Oliver Kruse	C-PRP	M2005919/461219833157727601/2649631661090255774953 : 9F0B08CF9DF6CE00 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2005919/2649631661090255774953/461219833157727601 : 9F0B08CF9DF6CE00 PRP: Verified (Factored) PRP without proof (not generated)
2016-01-15	alpertron	F-PM1	Factor: 2649631661090255774953 / (P-1, B1=500000, B2=15000000, E=12)