%N Concatenations C1 and C2 and C3 are all prime (see the comment lines).
%C C1 = 'prevprime(n) followed by n'
%C C2 = 'n followed by nextprime(n)'
%C C3 = 'prevprime(n) followed by n followed by nextprime(n)'
%e n=95079 -> previous prime is 95071, next prime is 95083, thus '9501795079' and '9507995083' and '950719507995083' are all three primes.
%Y Cf. A034808-A034821.
%A _Patrick De Geest_, Oct 15 1998