1 846 769 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
55403071	8	25.7	old
1667481571603698949103	22	70.5	2021-04-13 16:06:40

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)	2017-10-04	Oliver Kruse	DC86C7EA060F888E	1	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	DC86C7EA060F888E	1	1206154	1	3
Verified	2021-04-13	ThomRuley	3A7B20DBABDB4C1D	2	1624574	5	3
Verified	2021-04-15	LaurV	3A7B20DBABDB4C1D	2	750945	5	3

History

Date	User	Type	Result
2022-04-11	Lisander Viaene	NF-PM1	B1=500000, B2=2835864570
2021-04-15	Simon Josefsson	CERT	PRP Certification Proof certified good
2021-04-15	LaurV	C-PRP	M1846769/55403071/1667481571603698949103 : 3A7B20DBABDB4C1D PRP proof power = 7 PRP: Verified Proof certified good
2021-04-13	ThomRuley	C-PRP	M1846769/55403071/1667481571603698949103 : 3A7B20DBABDB4C1D PRP: Verified PRP without proof (not generated)
2021-04-13	_p95holder_	F-ECM	Factor: 1667481571603698949103 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-06	kkmrkkblmbrbk	C-PRP	M1846769/55403071 : DC86C7EA060F888E PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1846769/55403071 : DC86C7EA060F888E PRP: Verified PRP without proof (not generated)