A162658 - OEIS

A162658

Primes such that the sum of its smallest and largest decimal digits is an odd prime.

23, 29, 41, 47, 61, 67, 83, 103, 107, 163, 211, 223, 229, 233, 241, 269, 293, 307, 383, 421, 431, 433, 443, 449, 457, 461, 467, 479, 491, 499, 503, 509, 523, 547, 587, 607, 613, 631, 641, 661, 677, 701, 829, 853, 857, 863, 883, 929, 947

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

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

EXAMPLE

947 is a prime in which the sum of the smallest digit (4) and the largest digit (9) is an odd prime (13).

CROSSREFS

A046704, A070027, A086244, A088136, A091939, A109981

Sequence in context: A094383 A166565 A050207 * A303009 A227757 A227756

Adjacent sequences: A162655 A162656 A162657 * A162659 A162660 A162661

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi, Jul 09 2009

STATUS

approved