OFFSET
1,1
COMMENTS
Different from A104211 where ("only") the sum of all digits is considered; of course exactly the two-digit terms coincide.
LINKS
M. F. Hasler in reply to E. Angelini, Re: Any digit-pair in S sums to a prime, SeqFan list, Apr 11 2013
EXAMPLE
102 is here because 1+0 is not prime (even though 0+2 is).
MATHEMATICA
Select[Range[10, 105], MemberQ[PrimeQ[Total /@ Partition[IntegerDigits[#], 2, 1]], False] &] (* T. D. Noe, Apr 16 2013 *)
PROG
(PARI) is(n)=for(i=2, #n=digits(n), isprime(n[i-1]+n[i])||return(1))
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
M. F. Hasler, Apr 11 2013
STATUS
approved