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

1,1

Links

Table of n, a(n) for n=1..47.

Example

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

Prog

(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))}

Crossrefs

Intersection of A001043 and A046034.

Sequence in context: A067282 A045539 A281202 * A081075 A247766 A247777

Adjacent sequences: A173716 A173717 A173718 * A173720 A173721 A173722

Keyword

nonn,base

Author

Zak Seidov, Dec 22 2012

Status

approved