2 122 039 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
21220391	8	24.3	old
145818135940601054311	21	67.0	2018-01-07 10:42:19

ECM

Digits	B1	Curves
25	50000	99 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-08	Oliver Kruse	B0619CD176B22331	1	0	1	3
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	B0619CD176B22331	1	1408654	1	3
Verified	2018-01-09	AdolfNor	1AB32453E33BD0FF	2	2044823	5	3
Verified	2018-01-10	Oliver Kruse	1AB32453E33BD0FF	2	1070382	5	3

History

Date	User	Type	Result
2018-01-10	Oliver Kruse	C-PRP	M2122039/21220391/145818135940601054311 : 1AB32453E33BD0FF PRP: Verified PRP without proof (not generated)
2018-01-09	AdolfNor	C-PRP	M2122039/21220391/145818135940601054311 : 1AB32453E33BD0FF PRP: Verified PRP without proof (not generated)
2018-01-07	ATH	F-ECM	Factor: 145818135940601054311 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-17	kkmrkkblmbrbk	C-PRP	M2122039/21220391 : B0619CD176B22331 PRP: Verified PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2122039/21220391 : B0619CD176B22331 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12