A173719 Sums of 2 successive primes s = prime(m) + prime(m+1) such that all digits of s are primes.

5, 52, 222, 352, 372, 532, 752, 772, 2252, 2352, 2572, 3222, 3232, 5322, 7572, 22332, 22552, 22722, 22752, 23572, 25232, 25572, 27232, 27522, 27732, 32732, 33522, 33772, 35232, 35572, 35772, 37332, 52232, 52332, 52372, 53772, 55552, 57332, 72532, 72772, 75252, 75732, 77322, 222532, 222572, 223552, 223572

Offset: 1

Author

Zak Seidov, Dec 22 2012

Keywords

• nonn
• base

Examples

			5 = 2 + 3, 52 = 23 + 29.
		

Crossrefs

Intersection of A001043 and A046034.

Programs

PARI

{a=2;b=3;for(n=1,12000,s=a+b;ev=eval(Vec(Str(s)));if(sum(k=1,#ev,isprime(ev[k]))==#ev,print1(s", "));a=b;b=nextprime(b+2))}