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A118849
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Digital clock primes such that the number of minutes past midnight is also prime.
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5
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2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 101, 107, 113, 137, 149, 211, 229, 311, 313, 317, 331, 347, 349, 353, 359, 401, 431, 443, 547, 607, 613, 619, 641, 659, 701, 719, 743, 811, 823, 829, 907, 929, 937, 947, 953, 1013, 1019, 1031, 1117
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| The number of minutes past midnight represented by each of the times here can be found in A118850.
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LINKS
| Nathaniel Johnston, Table of n, a(n) for n = 1..83 (full sequence)
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FORMULA
| a(n) = A118850(n)+floor(A118850(n)/60)*40
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MAPLE
| for h from 0 to 23 do for m from 0 to 59 do t:=100*h+m: if(isprime(60*h+m) and isprime(t))then printf("%d, ", t): fi: od: od: # Nathaniel Johnston, May 17 2011
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CROSSREFS
| Cf. A050246, A118848, A118850.
Sequence in context: A038614 A171047 A050246 * A049561 A080191 A073350
Adjacent sequences: A118846 A118847 A118848 * A118850 A118851 A118852
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KEYWORD
| nonn,base,easy,fini
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AUTHOR
| Carl R. White (oeisfan(AT)cyreksoft.yorks.com), May 01 2006
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