

A164078


Prime p2 of the sequence A164077: a^b + c^d = p1 (A164077), where a, b, c, d are primes and a + b + c + d = p2, where p2 is prime and conc(abcd) = p3 (concatenation of a, b, c , d) is also prime (A164079).


2




OFFSET

1,1


LINKS

Table of n, a(n) for n=1..6.


EXAMPLE

5^5 + 2^7 = 3253, 5 + 5 + 2 + 7 = 19, conc (abcd) = 5527; 29^3 + 2^7 = 24517, 29 + 3 + 2 + 7 = 41, conc (abcd) = 29327; 2^5 + 5^7 = 78157, 2 + 5 + 5 + 7 = 19, conc (abcd) = 2557; 2^13 + 71^3 = 366103, 2 + 13 + 71 + 3 = 89, conc (abcd) = 89; 213713


CROSSREFS

Sequence in context: A041720 A098850 A264537 * A128677 A065349 A085778
Adjacent sequences: A164075 A164076 A164077 * A164079 A164080 A164081


KEYWORD

nonn,base


AUTHOR

Oleg Zyakun, Aug 12 2009


STATUS

approved



