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A178091
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Emirps whose digital sums are also emirps.
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3
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157, 179, 337, 359, 733, 751, 953, 971, 1097, 1237, 1259, 1381, 1439, 1453, 1471, 1583, 1619, 1723, 1741, 1831, 3019, 3109, 3163, 3257, 3271, 3343, 3347, 3433, 3527, 3541, 3613, 3851, 7253, 7321, 7433, 7523, 7699, 7879, 7901, 9013, 9103, 9161, 9341, 9521, 9679, 9769, 9787, 9967
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OFFSET
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1,1
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COMMENTS
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Palindromic primes are not allowed, nor are palindromic digital sums of primes. - Harvey P. Dale, Feb 23 2014
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LINKS
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Harvey P. Dale, Table of n, a(n) for n = 1..1000
Silva, Prime Curios, Entry 157
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MATHEMATICA
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dseQ[n_]:=Module[{idn=IntegerDigits[n], ds}, ds=IntegerDigits[Total[idn]]; idn!=Reverse[idn]&&ds!=Reverse[ds] && And@@PrimeQ[{FromDigits[ Reverse[ idn]], FromDigits[ds], FromDigits[Reverse[ds]]}]]; Select[Prime[Range[ 1300]], dseQ] (* Harvey P. Dale, Feb 23 2014 *)
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CROSSREFS
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Cf. A006567, A178092, A178093
Sequence in context: A045230 A180551 A096704 * A178092 A140035 A007356
Adjacent sequences: A178088 A178089 A178090 * A178092 A178093 A178094
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KEYWORD
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nonn,base
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AUTHOR
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Lekraj Beedassy, May 19 2010
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STATUS
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approved
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