649 081 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
2712304651472842252543583	25	81.2	2021-01-31 05:50:18

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	212 / 640

Estimated T-Level: 26.7 ⓘ

TF below 2^84 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	3552	0
Verified (Factored)		Glenn Leider	4656FD1F26457552	0
Verified (Factored)	2002-09-14	John Zabel	4656FD1F26457552	256151
Verified (Factored)	2015-04-11	MadPoo	4656FD1F26457552	432915

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-01-31	ViliamF	42FBE7BA8B6A39EA	1	469527	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^67 to 2^68
2022-03-07	LordJulius	NF	no factor from 2^66 to 2^67
2022-03-06	LordJulius	NF	no factor from 2^54 to 2^55
2022-03-06	Team_Inspector	NF	no factor from 2^54 to 2^55
2021-01-31	Chun sung soo	CERT	PRP Certification Proof certified good
2021-01-31	ViliamF	C-PRP	M649081/2712304651472842252543583 : 42FBE7BA8B6A39EA PRP proof power = 6 PRP: Verified Proof certified good
2021-01-31	GAN	F-ECM	Factor: 2712304651472842252543583 / (ECM curve 4, B1=250000, B2=25000000, Sigma=5356120225245404)
2021-01-16	ViliamF	NF-PM1	B1=25000000, B2=750000000, E=12
2020-11-24	Carlos Pinho	NF-PM1	B1=46000, B2=1982000, E=6
2019-03-21	Smok_bmv	NF	no factor from 2^68 to 2^69
2019-03-20	Smok_bmv	NF	no factor from 2^67 to 2^68
2019-03-20	Smok_bmv	NF	no factor from 2^66 to 2^67
2017-07-27	Smok_bmv	NF	no factor from 2^65 to 2^66
2017-06-27	Smok_bmv	NF	no factor from 2^64 to 2^65
2015-11-15	Sid & Andy	NF-PM1	B1=6490810, B2=194724300, E=12
2015-10-20	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-10-20	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-06-01	lycorn	NF	no factor from 2^61 to 2^62
2015-04-11	MadPoo	C-LL	4656FD1F26457552
2013-10-22	David Campeau	NF-PM1	B1=1300000, B2=41600000, E=12
2012-08-11	Joss	NF-PM1	B1=1298162
2012-06-19	Joss	NF-PM1	B1=649087
2011-09-05	Joss	NF-PM1	B1=581839
2011-07-10	Joss	NF-PM1	B1=349103
2011-01-09	Sid & Andy	NF	no factor from 2^60 to 2^61
2008-10-11	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-10-11	Sturle Sunde	NF	no factor from 2^58 to 2^59

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