Talk:Rare numbers: Difference between revisions
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m (→21+ digit rare numbers: added f+r and f-r columns) |
m (→21+ digit rare numbers: added a couple of 23 digit rare numbers) |
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That took about 5 3/4 days of computation. Only one odd number. Lots of 2,2 combinations there. Nearly half of all rare numbers under 21 digits start and end with 2. The trend continues above 20 digits with over half starting and ending with 2. --[[User:Enter your username|Enter your username]] ([[User talk:Enter your username|talk]]) 06:17, 2 December 2019 (UTC) |
That took about 5 3/4 days of computation. Only one odd number. Lots of 2,2 combinations there. Nearly half of all rare numbers under 21 digits start and end with 2. The trend continues above 20 digits with over half starting and ending with 2. --[[User:Enter your username|Enter your username]] ([[User talk:Enter your username|talk]]) 06:17, 2 December 2019 (UTC) |
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Some 23s: |
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124 (80,618,209,916,486,890,281,608) |
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125 (22,781,275,420,027,357,218,722) |
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--[[User:Enter your username|Enter your username]] ([[User talk:Enter your username|talk]]) 06:16, 8 December 2019 (UTC) |
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:Now that you've established that there are five 21 digit rare numbers, it might be worth mailing SSG (at guptass@rediffmail.com) to see if he'll add them to his list. |
:Now that you've established that there are five 21 digit rare numbers, it might be worth mailing SSG (at guptass@rediffmail.com) to see if he'll add them to his list. |
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