2 490 821 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
94447749487996060007	20	66.4	2014-11-27 09:05:25

P-1 factors

Date	Factors	B1	B2
2014-11-27	94447749487996060007	2382500	85770100

ECM

Digits	B1	Curves
25	50000	154 / 280

Estimated T-Level: 22.8 ⓘ

TF below 2^71 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Dr. Larry J. Paden	A9738EF5474C2833	0	Windows,Prime95,v14,(aka WQ1)
Factored	1999-05-30	Michael Snyder	A9738EF5474C2833	7535	Windows,Prime95,v17,(aka WT1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-14	Oliver Kruse	F0C1308D68B74D51	1	1208062	5	3
Verified	PRP without proof (not generated)	2017-11-30	storm5510	F0C1308D68B74D51	1	1330803	5	3

History

Date	User	Type	Result
2022-03-10	LordJulius	NF	no factor TF: 1-60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-30	storm5510	C-PRP	M2490821/94447749487996060007 : F0C1308D68B74D51
2017-10-14	Oliver Kruse	C-PRP	M2490821/94447749487996060007 : F0C1308D68B74D51
2014-11-27	mikr	F-PM1	Factor: 94447749487996060007 / B1=2382500, B2=85770100
2014-09-10	Joss	NF-PM1	B1=120768
2013-01-23	dbaugh	NF	no factor TF: 62-63
2012-06-11	Sebastian Hornbostel	NF	no factor TF: 61-62
2011-01-21	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-12-22	Joss	NF-PM1	B1=20000
2009-01-15	Sturle Sunde	NF	no factor TF: 60-61
2003-10-31	Team Prime Rib	NF-PM1	B1=15000, B2=228750
2003-10-23	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-05-30	-anonymous-	C-LL	A9738EF5474C2833
1999-05-02	-anonymous-	NF	no factor TF: 1-59