2 040 191 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
102911966437266294207769	24	76.4	2015-07-08 13:47:21

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	157 / 640

Estimated T-Level: 26.2 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gregor Hoffleit	4610C063636EDC88	0
Verified (Factored)	1999-01-29	Carlo Baffa	4610C063636EDC88	1827200

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-06	Oliver Kruse	8D029F2D0345E2A2	1	0	1	3
Verified	2017-11-14	kkmrkkblmbrbk	8D029F2D0345E2A2	1	573523	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-14	kkmrkkblmbrbk	C-PRP	M2040191/102911966437266294207769 : 8D029F2D0345E2A2 PRP: Verified PRP without proof (not generated)
2017-10-06	Oliver Kruse	C-PRP	M2040191/102911966437266294207769 : 8D029F2D0345E2A2 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-07-08	guru	F-ECM	Factor: 102911966437266294207769 / (ECM curve 3, B1=50000, B2=5000000)
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
2014-10-17	Joss	NF-PM1	B1=162920
2014-07-18	Joss	NF-PM1	B1=131460
2013-08-30	ramgeis	NF	no factor from 2^62 to 2^63
2012-02-11	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-02-10	markr	NF-PM1	B1=100000, B2=3000000, E=6
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61