3 153 383 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 5 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
75000061273	11	36.1	old
25258824873577	14	44.5	2008-09-30 14:46:38
34225967668591	14	45.0	2008-09-30 14:46:38
2620015859745096313	19	61.2	2016-04-07 11:47:52
42406868054499942361	20	65.2	2018-07-24 11:23:54

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

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

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-31	Oliver Kruse	17752220F7D71FF7	4	1566543	5	3
Verified (Factored)	2017-12-12	kkmrkkblmbrbk	17752220F7D71FF7	4	2494201	5	3
Verified	2018-07-27	_p95holder_	17752220F7D71FF7	5	1248291	5	3

History

Date	User	Type	Result
2022-07-18	Joss	NF-PM1	B1=4000000, B2=3193494150
2022-03-24	LordJulius	NF	no factor from 2^63 to 2^64
2022-03-24	LordJulius	NF	no factor from 2^62 to 2^63
2022-01-10	Joss	NF-PM1	B1=4000000, B2=1038178680
2021-12-21	Joss	NF-PM1	B1=4000000, B2=116758950
2021-08-21	Joss	NF-PM1	B1=3153383, B2=157669150, E=12
2021-08-20	Joss	NF	no factor from 2^69 to 2^70
2021-08-11	Joss	NF-PM1	B1=3153383, B2=31533830, E=12
2021-08-06	Joss	NF-PM1	B1=3153383
2021-01-26	Joss	NF	no factor from 2^68 to 2^69
2021-01-25	Joss	NF	no factor from 2^67 to 2^68
2021-01-20	Joss	NF	no factor from 2^66 to 2^67
2021-01-02	Joss	NF	no factor from 2^64 to 2^65
2020-06-24	Joss	NF-PM1	B1=1734359, B2=31533830, E=12
2018-07-27	_p95holder_	C-PRP	M3153383/75000061273/25258824873577/34225967668591/2620015859745096313/42406868054499942361 : 17752220F7D71FF7 PRP: Verified PRP without proof (not generated)
2018-07-24	TJAOI	F	Factor: 42406868054499942361 / TF: 65-66
2017-12-12	kkmrkkblmbrbk	C-PRP	M3153383/75000061273/25258824873577/34225967668591/2620015859745096313 : 17752220F7D71FF7 PRP: Verified PRP without proof (not generated)
2017-10-31	Oliver Kruse	C-PRP	M3153383/75000061273/25258824873577/34225967668591/2620015859745096313 : 17752220F7D71FF7 PRP: Verified PRP without proof (not generated)
2016-04-07	TJAOI	F	Factor: 2620015859745096313 / TF: 61-62
2008-09-30	markr	F	Factor: 34225967668591
2008-09-30	markr	F	Factor: 25258824873577

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