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Search: id:A068807
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| A068807 |
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Primes whose sum of digits is a power of 2. |
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+0
1
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| 2, 11, 13, 17, 31, 53, 71, 79, 97, 101, 103, 107, 211, 233, 251, 277, 349, 367, 431, 439, 457, 503, 521, 547, 619, 673, 691, 701, 709, 727, 853, 907, 1021, 1061, 1069, 1087, 1151, 1201, 1223, 1249, 1429, 1447, 1483, 1511, 1601, 1609, 1627, 1663, 1753, 1861
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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Select[ Prime@Range[ 300 ], IntegerQ[ Log[ 2, Plus@@IntegerDigits[ # ] ] ]& ] (*Chandler*)
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KEYWORD
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base,easy,nonn,new
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 06 2002
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 03 2009
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