2 011 913 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
39722510605304437649	20	65.1	2015-06-29 12:56:55
12568233776615150477383	23	73.4	2023-03-29 14:01:53

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	116 / 640

Estimated T-Level: 25.9 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Dwayne Towell	8E7F3E8E92E954FF	0
Verified (Factored)	1999-06-06	Hannu Kalli	8E7F3E8E92E954FF	897276

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	D803EF9144508282	1	0	1	3
Verified (Factored)	2017-11-13	Chang Chia-Tche	D803EF9144508282	1	1992614	1	3
Verified	2023-03-29	JacobZ	BDA2689112DCE565	2	1941359	5	3

History

Date	User	Type	Result
2023-03-29	Jaron Wakley	CERT	PRP Certification Proof certified good
2023-03-29	JacobZ	C-PRP	M2011913/39722510605304437649/12568233776615150477383 : BDA2689112DCE565 PRP proof power = 7 PRP: Verified Proof certified good
2023-03-29	JacobZ	F-ECM	Factor: 12568233776615150477383 / (ECM curve 3, B1=50000, B2=45033450, Sigma=7924285863940887)
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-13	Chang Chia-Tche	C-PRP	M2011913/39722510605304437649 : D803EF9144508282 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2011913/39722510605304437649 : D803EF9144508282 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-06-29	guru	F-ECM	Factor: 39722510605304437649 / (ECM curve 1, B1=50000, B2=5000000)
2015-03-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-10-09	David Campeau	NF-PM1	B1=580000, B2=15080000, E=12
2013-02-11	dbaugh	NF	no factor from 2^62 to 2^63
2012-01-31	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-02	Joss	NF-PM1	B1=201191
2009-01-05	Sturle Sunde	NF	no factor from 2^60 to 2^61