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A158195

Prime numbers such that sum of digits is even semiprime.

13, 19, 31, 37, 59, 73, 103, 109, 127, 149, 163, 167, 181, 211, 239, 257, 271, 293, 307, 347, 383, 419, 433, 491, 499, 509, 523, 541, 563, 613, 617, 631, 653, 743, 761, 769, 787, 811, 859, 877, 941, 967, 1009, 1021, 1049, 1063, 1117, 1153, 1171, 1193, 1201

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Even semiprime = 2*prime.

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

EXAMPLE

13(1+3=2*2), 19(1+9=2*5), 31(3+1=2*2), 37(3+7=2*5), 59(5+9=2*7).

MATHEMATICA

Select[Prime[Range[200]], PrimeQ[Total[IntegerDigits[#]]/2]&] (* Peter J. C. Moses, Jun 05 2014 *)

Select[Prime[Range[200]], EvenQ[Total[IntegerDigits[#]]]&& PrimeOmega[ Total[ IntegerDigits[ #]]] ==2&] (* Harvey P. Dale, Sep 30 2016 *)