2 043 191 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
3422053571247618385904165377	28	91.5	2019-07-13 10:56:54

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	129 / 640

Estimated T-Level: 26.0 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Bill Rea	9C7C1C6EED679EB4	0
Verified (Factored)	1999-01-17	Davide Ballarin	9C7C1C6EED679EB4	1959081
Verified (Factored)	2016-07-15	Mark Rose	9C7C1C6EED679EB4	440179

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-07-14	Niels_Mache_Nextcloud	C63267CB3DBE88AE	1	341364	5	3
Verified	2019-07-14	ATH	C63267CB3DBE88AE	1	210619	5	3

P-1 factors

Date	Factor	B1	B2
2019-07-13	3422053571247618385904165377	4000000	200000000

History

Date	User	Type	Result
2019-07-14	ATH	C-PRP	M2043191/3422053571247618385904165377 : C63267CB3DBE88AE PRP: Verified PRP without proof (not generated)
2019-07-14	Niels_Mache_Nextcloud	C-PRP	M2043191/3422053571247618385904165377 : C63267CB3DBE88AE PRP: Verified PRP without proof (not generated)
2019-07-13	mikr	F-PM1	Factor: 3422053571247618385904165377 / (P-1, B1=4000000, B2=200000000, E=12)
2019-06-29	BigBrother	NF-PM1	B1=1000000, B2=20000000, E=12
2019-03-22	chuenkit	NF	no factor from 2^67 to 2^68
2016-08-04	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-07-15	Mark Rose	C-LL	9C7C1C6EED679EB4
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-10-06	Bruno Victal	NF-PM1	B1=500000, B2=15000000, E=12
2015-04-13	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-13	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-19	Joss	NF-PM1	B1=166414
2013-08-30	ramgeis	NF	no factor from 2^62 to 2^63
2012-02-28	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-02-05	kurly	NF-PM1	B1=135000, B2=2868750, E=6
2011-01-04	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61