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2012-02-21, 10:44
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#1 |
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Banned
"Luigi"
Aug 2002
Team Italia
113718 Posts |
Happy Palindromic day!
For us Europeans, today is 21-02-2012
 Luigi |
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2012-02-21, 18:00
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#2 |
Apr 2011
in vivo
3·52 Posts |
2, 3, 5, 7, 11, 101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, 919, 929, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831, 13931, 14341, 14741, 15451, 15551, 16061, 16361, 16561, 16661, 17471, 17971, 18181, 18481, 19391, 19891 and 19991.
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2012-02-21, 18:04
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#3 |
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Apr 2011
in vivo
3·52 Posts |
2
30203 133020331 1713302033171 12171330203317121 151217133020331712151 1815121713302033171215181 16181512171330203317121518161 331618151217133020331712151816133 9333161815121713302033171215181613339 11933316181512171330203317121518161333911 I imagine both of these have been all ready been posted somewhere. |
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2012-02-21, 18:13
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#4 | |
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Bamboozled!
"๐บ๐๐ท๐ท๐ญ"
May 2003
Down not across
2×73×17 Posts |
Quote:
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2012-02-21, 18:20
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#5 |
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(loop (#_fork))
Feb 2006
Cambridge, England
2·7·461 Posts |
I'm guessing it's the largest tree of palindromic primes growing in that two-digits-at-a-side way
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