1 844 939 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
14759513	8	23.8	old
4649246281	10	32.1	2008-07-15 07:47:19
630972827879	12	39.2	2008-07-15 07:47:20
238448870647471358713	21	67.7	2020-07-29 14:43:42

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	337D08C68C9F994C	3	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	337D08C68C9F994C	3	267392	1	3
Verified	2020-07-30	atrench	20F9E85E7BF3E329	4	74673	5	3
Verified	2020-07-30	pew	20F9E85E7BF3E329	4	1788982	5	3

History

Date	User	Type	Result
2022-04-11	Lisander Viaene	NF-PM1	B1=500000, B2=2835864570
2020-07-30	pew	C-PRP	M1844939/14759513/4649246281/630972827879/238448870647471358713 : 20F9E85E7BF3E329 PRP: Verified PRP without proof (not generated)
2020-07-30	atrench	C-PRP	M1844939/14759513/4649246281/630972827879/238448870647471358713 : 20F9E85E7BF3E329 PRP: Verified PRP without proof (not generated)
2020-07-29	_p95holder_	F-ECM	Factor: 238448870647471358713 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-06	kkmrkkblmbrbk	C-PRP	M1844939/14759513/4649246281/630972827879 : 337D08C68C9F994C PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1844939/14759513/4649246281/630972827879 : 337D08C68C9F994C PRP: Verified PRP without proof (not generated)
2008-07-15	J Feitsma	F	Factor: 630972827879
2008-07-15	J Feitsma	F	Factor: 4649246281