3 315 407 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1520303995438864538730193	25	80.3	2016-09-29 08:02:07

ECM

Digits	B1	Curves
25	50000	12 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-03-03	Joel Armengaud	D668DBD11A939597	0
Verified (Factored)	1999-07-30	Luisma Moreno	D668DBD11A939597	3030206

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-04	Oliver Kruse	A711D4A2252B9DCD	1	2145134	5	3
Verified	2017-12-14	kkmrkkblmbrbk	A711D4A2252B9DCD	1	2653916	5	3

History

Date	User	Type	Result
2022-09-07	Joss	NF-PM1	B1=1063080, B2=226749600
2022-04-20	LordJulius	NF	no factor from 2^66 to 2^67
2022-04-20	LordJulius	NF	no factor from 2^65 to 2^66
2022-04-20	LordJulius	NF	no factor from 2^64 to 2^65
2022-04-20	LordJulius	NF	no factor from 2^63 to 2^64
2022-04-20	LordJulius	NF	no factor from 2^62 to 2^63
2022-04-20	LordJulius	NF	no factor from 2^1 to 2^62
2022-01-24	Joss	NF-PM1	B1=1063080, B2=119912100
2021-06-30	Joss	NF	no factor from 2^67 to 2^68
2021-03-07	Joss	NF-PM1	B1=331540, B2=3646947, E=6
2017-12-14	kkmrkkblmbrbk	C-PRP	M3315407/1520303995438864538730193 : A711D4A2252B9DCD PRP: Verified PRP without proof (not generated)
2017-11-04	Oliver Kruse	C-PRP	M3315407/1520303995438864538730193 : A711D4A2252B9DCD PRP: Verified PRP without proof (not generated)
2016-09-29	f0rteOC	F-ECM	Factor: 1520303995438864538730193
2016-03-02	Yxinity	NF	no factor from 2^65 to 2^66
2012-11-19	Squeeky_Squirrel	NF-PM1	B1=180000, B2=3285000, E=6
2011-10-25	Aaron Haviland	NF	no factor from 2^64 to 2^65
2011-10-25	Aaron Haviland	NF	no factor from 2^63 to 2^64
2011-10-25	Aaron Haviland	NF	no factor from 2^62 to 2^63
2011-10-03	USAFSS	NF-PM1	B1=55000, B2=880000, E=6
2011-09-10	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=195000
2009-03-29	S485122	NF	no factor from 2^60 to 2^61

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