2 442 949 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
615251156025477983682305648166401	33	108.9	2024-07-17 04:43:13
14061468617580109166602570474591798033	38	123.4	2019-03-15 05:29:06

ECM

Digits	B1	Curves
25	50000	144 / 280

Estimated T-Level: 22.6 ⓘ

TF below 2^70 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Marc Honey	0A2CF991FE776759	0
Verified (Factored)	1999-04-13	John Borleis III	0A2CF991FE776759	784813
Verified (Factored)	2018-05-24	kkmrkkblmbrbk	0A2CF991FE776759	1174667

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2019-03-16	artorollo	49C019FE933DFEE9	1	1813245	5	3
Verified (Factored)	2019-03-16	kkmrkkblmbrbk	49C019FE933DFEE9	1	2212808	5	3
Verified	2024-07-17	Ducho_YYZ	49C019FE933DFEE9	2	335763	5	3

P-1 factors

Date	Factor	B1	B2
2019-03-15	14061468617580109166602570474591798033	6000000	180000000

History

Date	User	Type	Result
2024-07-17	LOBES	CERT	PRP Certification Proof certified good
2024-07-17	Ducho_YYZ	C-PRP	M2442949/14061468617580109166602570474591798033/615251156025477983682305648166401 : 49C019FE933DFEE9 PRP proof power = 7 PRP: Verified Proof certified good
2024-07-17	Ducho_YYZ	F-ECM	Factor: 615251156025477983682305648166401 / (ECM curve 39, B1=50000, B2=117709515, Edwards Sigma=5687615763489176)
2019-03-16	kkmrkkblmbrbk	C-PRP	M2442949/14061468617580109166602570474591798033 : 49C019FE933DFEE9 PRP: Verified (Factored) PRP without proof (not generated)
2019-03-16	artorollo	C-PRP	M2442949/14061468617580109166602570474591798033 : 49C019FE933DFEE9 PRP: Verified (Factored) PRP without proof (not generated)
2019-03-15	Sid & Andy	F-PM1	Factor: 14061468617580109166602570474591798033 / (P-1, B1=6000000, B2=180000000, E=12)
2018-05-24	kkmrkkblmbrbk	C-LL	0A2CF991FE776759
2017-07-12	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-10-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-01-20	mikr	NF-PM1	B1=1172000, B2=48000000, E=12
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-06-06	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-18	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-11-17	Joss	NF-PM1	B1=20000
2009-01-16	Sturle Sunde	NF	no factor from 2^60 to 2^61