572 749 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
192247592657990278279217353	27	87.3	2021-06-04 15:52:46
120842045067398554452360803494218289	36	116.5	2019-04-18 01:30:56

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	210 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	1D31	0
Verified (Factored)		Ken Kriesel	4D5468C4AF8A1D31	0
Verified (Factored)		Klaus Kastens	4D5468C4AF8A1D31	184114
Verified (Factored)	2015-04-11	MadPoo	4D5468C4AF8A1D31	321933

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2019-04-18	trebor	0C02A9C2A3AD2CB8	1	493721	5	3
Verified (Factored)	2019-04-21	arnaud	0C02A9C2A3AD2CB8	1	278750	5	3
Verified	2021-06-04	ZacHFX	0C02A9C2A3AD2CB8	2	220363	5	3

P-1 factors

Date	Factor	B1	B2
2019-04-18	120842045067398554452360803494218289	10000000	400000000

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-06-04	Steve Sybesma	CERT	PRP Certification Proof certified good
2021-06-04	ZacHFX	C-PRP	M572749/120842045067398554452360803494218289/192247592657990278279217353 : 0C02A9C2A3AD2CB8 PRP proof power = 6 PRP: Verified Proof certified good
2021-06-04	TJAOI	F-ECM	Factor: 192247592657990278279217353 / (ECM curve 34, B1=250000, B2=35000000)
2019-04-21	arnaud	C-PRP	M572749/120842045067398554452360803494218289 : 0C02A9C2A3AD2CB8 PRP: Verified (Factored) PRP without proof (small exponent)
2019-04-18	trebor	C-PRP	M572749/120842045067398554452360803494218289 : 0C02A9C2A3AD2CB8 PRP: Verified (Factored) PRP without proof (small exponent)
2019-04-18	alex	F-PM1	Factor: 120842045067398554452360803494218289 / (P-1, B1=10000000, B2=400000000, E=12)
2018-06-04	chuenkit	NF	no factor from 2^65 to 2^66
2017-11-16	BloodERazor	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^61
2015-09-16	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-09-16	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-12	NR	NF	no factor from 2^61 to 2^62
2015-04-21	Sid & Andy	NF-PM1	B1=5727490, B2=171824700, E=12
2015-04-11	MadPoo	C-LL	4D5468C4AF8A1D31
2013-09-28	David Campeau	NF-PM1	B1=1040000, B2=32240000, E=12
2012-03-05	Joss	NF-PM1	B1=855388
2011-08-24	Joss	NF-PM1	B1=684310
2011-07-01	Joss	NF-PM1	B1=410586

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