1 162 229 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
19054570200348691447	20	64.0	2007-10-10 08:52:59

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)		David Slowinski	E6C	0
Verified (Factored)		Len Ruth	D78F912B230A6E6C	0
Verified (Factored)	2002-07-27	Ethan O'Connor	D78F912B230A6E6C	33166

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	DEAC2715E21CE25E	1	0	1	3
Verified	2017-10-17	Oliver Kruse	DEAC2715E21CE25E	1	1102279	1	3
Verified	2018-01-04	ATH	DEAC2715E21CE25E	1	208859	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
2018-01-04	ATH	C-PRP	M1162229/19054570200348691447 : DEAC2715E21CE25E PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1162229/19054570200348691447 : DEAC2715E21CE25E PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1162229/19054570200348691447 : DEAC2715E21CE25E PRP: Verified PRP without proof (not generated)
2007-10-10	robcreid	F-ECM	Factor: 19054570200348691447