1 473 319 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
187714327337259321919	21	67.3	2009-11-08 16:55:08

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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	Shift
Verified (Factored)		Thiemo Sammern	27455A5D0C78A871	0
Verified (Factored)	1998-11-14	Bruce Mitchell	27455A5D0C78A871	1288966

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-01	Oliver Kruse	F66DAA94D141F077	1	0	1	3
Verified	2017-10-28	kkmrkkblmbrbk	F66DAA94D141F077	1	219722	1	3

History

Date	User	Type	Result
2017-10-28	kkmrkkblmbrbk	C-PRP	M1473319/187714327337259321919 : F66DAA94D141F077 PRP: Verified PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1473319/187714327337259321919 : F66DAA94D141F077 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2009-11-08	JimBa	F-ECM	Factor: 187714327337259321919