1 659 817 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
9354343534457	13	43.1	old
125061293277481849	18	56.8	2015-04-20 21:08:56
315550820871329674303	21	68.1	2018-01-15 03:07:58

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)	2017-10-02	Oliver Kruse	7F038A73B36C5158	2	0	1	3
Verified (Factored)	2017-11-02	kkmrkkblmbrbk	7F038A73B36C5158	2	930087	1	3
Verified	2018-01-15	ATH	26D2FFDBA5D36467	3	1446576	5	3
Verified	2018-01-15	kkmrkkblmbrbk	26D2FFDBA5D36467	3	610136	5	3

P-1 factors

Date	Factor	B1	B2
2015-04-20	125061293277481849	500000	15000000

History

Date	User	Type	Result
2018-01-15	kkmrkkblmbrbk	C-PRP	M1659817/9354343534457/125061293277481849/315550820871329674303 : 26D2FFDBA5D36467 PRP: Verified PRP without proof (not generated)
2018-01-15	ATH	C-PRP	M1659817/9354343534457/125061293277481849/315550820871329674303 : 26D2FFDBA5D36467 PRP: Verified PRP without proof (not generated)
2018-01-15	Chang Chia-Tche	F-ECM	Factor: 315550820871329674303 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-02	kkmrkkblmbrbk	C-PRP	M1659817/9354343534457/125061293277481849 : 7F038A73B36C5158 PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1659817/9354343534457/125061293277481849 : 7F038A73B36C5158 PRP: Verified PRP without proof (not generated)
2015-04-20	alpertron	F-PM1	Factor: 125061293277481849 / (P-1, B1=500000, B2=15000000, E=12)