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Search: id:A144226
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| A144226 |
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Prime numbers containing equal number of odd and even digits. |
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+0
3
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| 23, 29, 41, 43, 47, 61, 67, 83, 89, 1009, 1021, 1049, 1061, 1063, 1069, 1087, 1201, 1223, 1229, 1249, 1283, 1289, 1409, 1423, 1427, 1429, 1447, 1481, 1483, 1487, 1489, 1601, 1607, 1609, 1621, 1627, 1663, 1667, 1669, 1801, 1823, 1847, 1861, 1867, 1889
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OFFSET
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1,1
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EXAMPLE
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The prime 1889 contains equal number of odd and even digits.
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MATHEMATICA
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fQ[n_] := Block[{id = IntegerDigits@ n}, Length@ Select[id, OddQ@ # &] == Length@ id/2]; Select[ Prime@ Range@ 300, fQ@ # &] [From Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 24 2008]
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CROSSREFS
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A000040, A144205
Sequence in context: A101784 A101802 A156983 this_sequence A094383 A050207 A162658
Adjacent sequences: A144223 A144224 A144225 this_sequence A144227 A144228 A144229
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Sep 15 2008
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