OFFSET
1,1
COMMENTS
303593 is the smallest emirp to satisfy the requirement.
LINKS
Shyam Sunder Gupta, Table of n, a(n) for n = 1..310
Chris K. Caldwell and G. L. Honaker, Jr., Prime Curios! 303593
EXAMPLE
a(1) = 303593: Reversing the digits gives 395303 and 303593 + 395303 = 698896 = 836^2.
MATHEMATICA
t = {}; Do[n = Prime[x]; m = FromDigits[Reverse[IntegerDigits[Prime[x]]]]; If[IntegerQ[(n + m)^(1/2)] && PrimeQ[m] && m!=n, AppendTo[t, n]], {x, 1, 7000000}]; t
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Shyam Sunder Gupta, Aug 17 2013
STATUS
approved