A091624 Lesser of consecutive primes whose sum is a perfect power (A001597).

3, 17, 47, 61, 71, 107, 283, 881, 1151, 1913, 2591, 3527, 4049, 4093, 6047, 7193, 7433, 10973, 15137, 20807, 21617, 24197, 26903, 28793, 34847, 37039, 46817, 53129, 56443, 69191, 74489, 83231, 84047, 98563, 103049, 103967, 109507, 110441, 112337

Offset: 1

Author

Robert G. Wilson v, Jan 24 2004

Keywords

• nonn

Links

• Hans Havermann, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A071087.

Cf. A061275.

Programs

Mathematica

NextPrim[n_] := Block[{k = n + 1}, While[ !PrimeQ[k], k++ ]; k]; PrimeExponents[n_] := Flatten[ Table[ #[[2]], {1}] & /@ FactorInteger[n]]; p = q = 2; l = {}; Do[q = NextPrim[p]; If[ Apply[ GCD, PrimeExponents[p + q]] > 1, AppendTo[l, p]]; p = q, {n, 2, 13000}]