A209663 Numbers n with property that n is prime, n+18 is prime and both have equal sum of digits.

5, 13, 19, 23, 29, 43, 53, 79, 109, 113, 139, 149, 163, 173, 179, 223, 233, 239, 263, 313, 349, 379, 439, 443, 449, 491, 503, 523, 569, 613, 643, 659, 673, 691, 709, 733, 739, 743, 769, 809, 839, 859, 863, 919, 929, 953, 1013, 1033, 1069, 1091, 1153, 1163

Offset: 1

Author

Antonio Roldán, Mar 13 2012

Keywords

• nonn
• base

Comments

Supersequence of A066540.

Examples

			613 is in the sequence because 613 is prime, 613+18 = 631 is also prime. Sum_of_digits(613) = 10 and Sum_of_digits(631) = 10.
		

Crossrefs

Cf. A066540.

Programs

Magma

[p: p in PrimesUpTo(1200) | IsPrime(p+18) and  &+Intseq(p) eq &+Intseq(p+18)]; // Bruno Berselli, Mar 13 2012