OBD Status

[Uncwilly]

This thread will hold updates on the progress of Operation Billion Digits.

A few definitions:

• 'Total' in the status refers to the total number of exponets that OBD has taken up.
  (The starting bit depth for an exponent is 60, i.e. any exponents that have factors below 60 bits have been eliminated from the list, prior to inclusion in OBD)
• 'Active' refers to those that have not had factors found.
• 'Factored' refers to those exponents that have had factors found. (Total - Factored = Active)
• '% out' refers to the percentage of the total that have had factors found ((Factored/Total) *100)
• 'Average bit depth' refers to the mean bit depth (as currently reported) of all the Active exponents
• 'Progress index' is a unitless number that reflects the total progress of the project taking into consideration: the total number of exponents in the project, the number that have had factors found, and the amount of work done on the remaining.
  It is calculated as follows: Total * %out * AvgBitDepth / 10000
• 'Largest factor' is the factor found by the project that has the greatest value and is the lowest factor for the exponent in question.

Until such time as there is progress beyond the 73 bit range, the charts will reflect the 60 - 73 bit range on the y-axis. The x-axis is the number of exponents in OBD. When a factor is found, the point is no longer plotted and the line is interpolated.

[Uncwilly]

Graph from 06/11/04:

[Uncwilly]

Stats and graph from 07/16/04:

[pre]Total Active Factored % out Avg bit depth Progress index
88 42 46 52.3 67.8 31.2
[/pre]

[Uncwilly]

Stats and graph from 08/13/04:

[pre]Total Active Factored % out Avg bit depth Progress index
124 61 63 50.8 66.2 41.7[/pre]

[Uncwilly]

Stats and graph from 09/17/04:

[pre]Total Active Factored % out Avg bit depth Progress index
124 58 66 53.2 67.3 44.4[/pre]

[Uncwilly]

Stats and graph from 10/15/04:

[pre]Total Active Factored % out Avg bit depth Progress index
124 54 70 56.5 69.0 48.3[/pre]

[Uncwilly]

Current Largest Factor:
4103086300931724495689

[wblipp]

Originally Posted by Uncwilly

Current Largest Factor:
4103086300931724495689

Although it's easy to figure out from the status page at http://ElevenSmooth.com/Billion.html, I think it would be a nice touch to include the finder and exponent for the largest factor.

The current largest factor was found by thomasn for the exponent 3321929759.

[Uncwilly]

Yes, that is true. My spreadsheet does not have the finder's ID's. I can automate the inclussion of the expo.

[Uncwilly]

Status as of 11/12/04
[pre]Total Active Factored % out Avg bit depth Progress index Largest Factor
185 84 101 54.6 66.4 67.1 4103086300931724495689[/pre]

[Uncwilly]

Originally Posted by Uncwilly

Status as of 11/12/04
[pre]Total Active Factored % out Avg bit depth Progress index Largest Factor
185 84 101 54.6 66.4 67.1 4103086300931724495689[/pre]

Corrected stats (expos with 2 known factors were accidentally double counted)

[pre]Total Active Factored % out Avg bit depth Progress index Largest Factor
181 84 97 53.6 66.4 64.4 4103086300931724495689[/pre]

Sorry for the error.

BTW, the text in parenthesis following "Total" in the first post is incorrect and should be ignored