1 838 747 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
172283238913	12	37.3	old
573618823864601	15	49.0	2008-08-26 20:20:07
8169468012184375311551	22	72.8	2019-01-07 06:33:05

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	110 / 640

Estimated T-Level: 25.9 ⓘ

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	EE70D0818814B15D	2	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	EE70D0818814B15D	2	554333	1	3
Verified	2019-01-07	Oliver Kruse	F6A7B775E28DB699	3	53252	5	3
Verified	2019-01-08	kkmrkkblmbrbk	F6A7B775E28DB699	3	195629	5	3

History

Date	User	Type	Result
2019-01-08	kkmrkkblmbrbk	C-PRP	M1838747/172283238913/573618823864601/8169468012184375311551 : F6A7B775E28DB699 PRP: Verified PRP without proof (not generated)
2019-01-07	Oliver Kruse	C-PRP	M1838747/172283238913/573618823864601/8169468012184375311551 : F6A7B775E28DB699 PRP: Verified PRP without proof (not generated)
2019-01-07	Chang Chia-Tche	F-ECM	Factor: 8169468012184375311551 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-06	kkmrkkblmbrbk	C-PRP	M1838747/172283238913/573618823864601 : EE70D0818814B15D PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1838747/172283238913/573618823864601 : EE70D0818814B15D PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 573618823864601