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 A179056 Numbers n such that prime(1)^1+prime(2)^2+...+prime(n)^n is prime. 0
 1, 2, 8, 6402 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The number corresponding to 6402 is a probable prime. There is no further term up to 9435. LINKS EXAMPLE prime(1)^1+prime(2)^2+...+prime(8)^8=17398892111 is prime, so 8 is the sequence. MATHEMATICA Select[Range[1, 100], PrimeQ[Sum[Prime[i]^i, {i, 1, #}]] &] (* Julien Kluge, Dec 03 2016 *) CROSSREFS Cf. A000040. Sequence in context: A324567 A135238 A133376 * A160814 A038582 A309860 Adjacent sequences:  A179053 A179054 A179055 * A179057 A179058 A179059 KEYWORD hard,more,nonn AUTHOR Farideh Firoozbakht, Jun 27 2010 STATUS approved

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Last modified April 21 17:36 EDT 2021. Contains 343156 sequences. (Running on oeis4.)