A339923 - OEIS

A339923

Numbers k such that 14^k + 3 is prime.

1, 2, 9, 24, 42, 74, 221, 620, 14064, 36697, 152048, 384558

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OFFSET

1,2

LINKS

EXAMPLE

1 is a term since 14^1 + 3 = 17 is a prime.

MATHEMATICA

Do[ If[ PrimeQ[ 14^n + 3], Print[n]], {n, 0, 200000}]

PROG

(PARI) is(n)=isprime(14^n + 3)

CROSSREFS

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(12) corresponds to a probable prime discovered by Paul Bourdelais, Jan 06 2021

STATUS

approved