1 187 413 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
480683140062703241999	21	68.7	2009-09-25 17:33:26

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)		knut ploder	BF853C1F05766060	0
Verified (Factored)		Cornelius Caesar	BF853C1F05766060	0
Verified (Factored)		Ricardo Montiel	BF853C1F05766060	0

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	4385B569D7C9C8D2	1	0	1	3
Verified	2017-10-17	Oliver Kruse	4385B569D7C9C8D2	1	1070359	1	3
Verified	2018-01-03	ATH	4385B569D7C9C8D2	1	556964	1	3

History

Date	User	Type	Result
2022-04-12	LordJulius	NF	no factor from 2^63 to 2^64
2022-04-12	LordJulius	NF	no factor from 2^62 to 2^63
2022-04-12	LordJulius	NF	no factor from 2^61 to 2^62
2022-04-12	LordJulius	NF	no factor from 2^1 to 2^61
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-01-03	ATH	C-PRP	M1187413/480683140062703241999 : 4385B569D7C9C8D2 PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1187413/480683140062703241999 : 4385B569D7C9C8D2 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1187413/480683140062703241999 : 4385B569D7C9C8D2 PRP: Verified PRP without proof (not generated)
2009-09-25	SubPrime	F-ECM	Factor: 480683140062703241999
2009-02-27	Sturle Sunde	NF	no factor from 2^60 to 2^61