5 553 269 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
12815048016712780759546943	26	83.4	2015-06-25 04:22:27

ECM

Digits	B1	Curves
25	50000	5 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		James Bullington	30739F176EF901E0	0
Verified (Factored)	2000-09-23	Henrik Oluf Olsen	30739F176EF901E0	2470058

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	7B2D0D561D3F303B	1	0	1	3
Verified	2018-07-07	Andrew B	7B2D0D561D3F303B	1	56357	1	3

History

Date	User	Type	Result
2018-07-07	Andrew B	C-PRP	M5553269/12815048016712780759546943 : 7B2D0D561D3F303B PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M5553269/12815048016712780759546943 : 7B2D0D561D3F303B PRP: Verified PRP without proof (not generated)
2015-06-25	bam	F-ECM	Factor: 12815048016712780759546943 / (ECM curve 2, B1=50000, B2=5000000)
2014-12-15	monst	NF	no factor from 2^64 to 2^65
2014-12-14	Nesowa	NF	no factor from 2^63 to 2^64
2010-11-25	Squeeky_Squirrel	NF-PM1	B1=65000, B2=1121250, E=6
2009-06-06	Carsten Kossendey	NF-PM1	B1=25000, B2=356250
2009-02-11	GrunwalderGIMP	NF	no factor from 2^62 to 2^63