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A076163
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Primes p such that absolute values of p minus sum of squares of digits of p is also prime.
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3
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13, 53, 59, 127, 233, 257, 293, 457, 521, 541, 547, 587, 857, 983, 1151, 1153, 1429, 1481, 1489, 1511, 1553, 1559, 1579, 1621, 1753, 1861, 2099, 2129, 2143, 2239, 2273, 2341, 2347, 2383, 2411, 2417, 2459, 2549, 2657, 2677, 2729, 2741
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OFFSET
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1,1
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LINKS
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EXAMPLE
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13 is OK because 13-(1^2+3^2)=3 is a prime.
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MATHEMATICA
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Select[Prime[Range[2, 400]], PrimeQ[Abs[#-Total[IntegerDigits[#]^2]]]&] (* Harvey P. Dale, Mar 31 2012 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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Definition corrected, specifying that the absolute value must be used Carmine Suriano, Jul 19 2010
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STATUS
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approved
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