1 726 471 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
648566394386280607666991	24	79.1	2020-02-19 08:03:27

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Francesco Oliveri	CABC0E9A8746686F	0
Verified (Factored)	1999-02-07	W. Izatt	CABC0E9A8746686F	1719593
Verified (Factored)	2015-07-18	MadPoo	CABC0E9A8746686F	244618

PRP Cofactor

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-02-20	Jinyuan Wang	AA3D2A2A78713289	1	345571	5	3
Verified	2020-02-20	AbsolutXTR	AA3D2A2A78713289	1	435288	5	3

History

Date	User	Type	Result
2020-02-20	AbsolutXTR	C-PRP	M1726471/648566394386280607666991 : AA3D2A2A78713289 PRP: Verified PRP without proof (not generated)
2020-02-20	Jinyuan Wang	C-PRP	M1726471/648566394386280607666991 : AA3D2A2A78713289 PRP: Verified PRP without proof (not generated)
2020-02-19	mnd9	F-ECM	Factor: 648566394386280607666991 / (ECM curve 2, B1=50000, B2=5000000, Sigma=4912684769096675)
2019-06-24	TJAOI	NF	no factor from 2^67 to 2^68
2018-10-17	Joss	NF-PM1	B1=1726471, B2=189911810, E=12
2018-10-12	Joss	NF-PM1	B1=1726471, B2=172647100, E=12
2018-10-07	Joss	NF-PM1	B1=1726471, B2=69058840, E=12
2018-10-03	Joss	NF-PM1	B1=1726471, B2=17264710, E=12
2018-04-09	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-09-04	mikr	NF-PM1	B1=3642200, B2=123456789, E=12
2015-09-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-24	Joss	NF-PM1	B1=1561010
2015-07-21	Joss	NF-PM1	B1=1419100
2015-07-18	MadPoo	C-LL	CABC0E9A8746686F
2015-07-07	Joss	NF-PM1	B1=1290091
2015-06-25	Joss	NF-PM1	B1=1172810
2015-06-08	Joss	NF-PM1	B1=1066191
2015-05-26	Joss	NF-PM1	B1=969265
2015-05-22	Joss	NF-PM1	B1=881150
2015-05-07	Joss	NF-PM1	B1=801046
2015-05-04	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-04	snme2pm1	NF	no factor from 2^63 to 2^64
2015-05-01	Joss	NF-PM1	B1=728224
2015-04-08	Joss	NF-PM1	B1=601839
2015-03-15	Joss	NF-PM1	B1=497389
2015-03-08	Joss	NF-PM1	B1=452172
2015-02-21	Joss	NF-PM1	B1=411066
2015-02-11	Joss	NF-PM1	B1=373697
2015-01-09	Joss	NF-PM1	B1=280765
2014-10-03	Joss	NF-PM1	B1=187177
2014-05-04	Joss	NF-PM1	B1=150000
2014-04-04	Joss	NF-PM1	B1=100000
2011-02-08	Carsten Kossendey	NF-PM1	B1=90000, B2=1530000, E=6
2010-10-27	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-23	Architects Cubed	NF	no factor from 2^60 to 2^61

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