1 575 083 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
3150167	7	21.6	old
885604230227911	15	49.7	2014-05-08 12:16:59
94544808593761468177	20	66.4	2018-11-15 05:47:45

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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)	2017-10-01	Oliver Kruse	B0ECF0827DEE7EB1	2	0	1	3
Verified (Factored)	2017-10-31	kkmrkkblmbrbk	B0ECF0827DEE7EB1	2	758131	1	3
Verified	2018-11-15	ATH	457F1A09ACD31670	3	1123238	5	3
Verified	2018-11-18	Chang Chia-Tche	457F1A09ACD31670	3	254966	5	3

History

Date	User	Type	Result
2018-11-18	Chang Chia-Tche	C-PRP	M1575083/3150167/885604230227911/94544808593761468177 : 457F1A09ACD31670 PRP: Verified PRP without proof (not generated)
2018-11-15	ATH	C-PRP	M1575083/3150167/885604230227911/94544808593761468177 : 457F1A09ACD31670 PRP: Verified PRP without proof (not generated)
2018-11-15	MarkS	F-ECM	Factor: 94544808593761468177 / (ECM curve 1, B1=50000, B2=5000000)
2017-10-31	kkmrkkblmbrbk	C-PRP	M1575083/3150167/885604230227911 : B0ECF0827DEE7EB1 PRP: Verified PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1575083/3150167/885604230227911 : B0ECF0827DEE7EB1 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-05-08	TJAOI	F	Factor: 885604230227911