1 557 607 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
961532607599	12	39.8	old
141813590882506426423	21	66.9	2017-12-02 17:50:16
1652984481205331861617	22	70.5	2019-07-19 09:18:03

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	BDDBA4E6984DC337	1	0	1	3
Verified (Factored)	2017-10-30	kkmrkkblmbrbk	BDDBA4E6984DC337	1	692135	1	3
Verified (Factored)	2017-12-03	kkmrkkblmbrbk	DD85B4871F844640	2	132850	5	3
Verified (Factored)	2017-12-03	ATH	DD85B4871F844640	2	252645	5	3
Verified	2019-07-19	ATH	DD85B4871F844640	3	684901	5	3

History

Date	User	Type	Result
2019-07-19	ATH	C-PRP	M1557607/961532607599/141813590882506426423/1652984481205331861617 : DD85B4871F844640 PRP: Verified PRP without proof (not generated)
2019-07-19	TJAOI	F-ECM	Factor: 1652984481205331861617 / (ECM curve 39, B1=50000, B2=5000000)
2017-12-03	ATH	C-PRP	M1557607/961532607599/141813590882506426423 : DD85B4871F844640 PRP: Verified PRP without proof (not generated)
2017-12-03	kkmrkkblmbrbk	C-PRP	M1557607/961532607599/141813590882506426423 : DD85B4871F844640 PRP: Verified PRP without proof (not generated)
2017-12-02	ATH	F-ECM	Factor: 141813590882506426423 / (ECM curve 3, B1=50000, B2=5000000)
2017-10-30	kkmrkkblmbrbk	C-PRP	M1557607/961532607599 : BDDBA4E6984DC337 PRP: Verified PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1557607/961532607599 : BDDBA4E6984DC337 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12