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Search: id:A113615
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| A113615 |
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Primes in which the frequency of every digit is also prime. |
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+0
2
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| 11, 11177, 11551, 11717, 11777, 12211, 13313, 13331, 14411, 15511, 15551, 16661, 17117, 18181, 19919, 19991, 21121, 21211, 21221, 22111, 22277, 22727, 22777, 27277, 32233, 32323, 33113, 33223, 33311, 33377, 33773, 35353, 35533, 37337
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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11777 is a term as it contains two ones and three sevens.
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MATHEMATICA
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Select[Prime[Range[10^4]], And @@ PrimeQ /@ Length /@ Split[Sort[IntegerDigits[ # ]]] &] (*Chandler*)
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CROSSREFS
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Sequence in context: A068223 A068224 A066945 this_sequence A034873 A075854 A050786
Adjacent sequences: A113612 A113613 A113614 this_sequence A113616 A113617 A113618
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 09 2005
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EXTENSIONS
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Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 11 2005
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