1 760 557 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
247441355198856473	18	57.8	old
481040135977258046234743	24	78.7	2019-08-04 11:46:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	108 / 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)		Ken Kriesel	094B42FC558E229D	0
Verified (Factored)		Tom Cage	094B42FC558E229D	0
Verified (Factored)	1999-09-14	Rick Adams	094B42FC558E229D	121981

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	537306C883219DB0	1	0	1	3
Verified (Factored)	2017-11-04	kkmrkkblmbrbk	537306C883219DB0	1	1120188	1	3
Verified	2019-08-08	roemer2201	F3CB5598CEA0DF43	2	883598	5	3
Verified	2019-08-09	kkmrkkblmbrbk	F3CB5598CEA0DF43	2	1220832	5	3

History

Date	User	Type	Result
2019-08-09	kkmrkkblmbrbk	C-PRP	M1760557/247441355198856473/481040135977258046234743 : F3CB5598CEA0DF43 PRP: Verified PRP without proof (not generated)
2019-08-08	roemer2201	C-PRP	M1760557/247441355198856473/481040135977258046234743 : F3CB5598CEA0DF43 PRP: Verified PRP without proof (not generated)
2019-08-04	Chang Chia-Tche	F-ECM	Factor: 481040135977258046234743 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-04	kkmrkkblmbrbk	C-PRP	M1760557/247441355198856473 : 537306C883219DB0 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1760557/247441355198856473 : 537306C883219DB0 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12