A309857 Primes p such that 2*p^3+1 is also prime.
2, 5, 11, 29, 59, 71, 107, 149, 191, 197, 227, 269, 431, 479, 491, 857, 941, 1019, 1049, 1217, 1259, 1289, 1451, 1601, 1619, 1667, 1709, 1847, 2081, 2237, 2267, 2447, 2549, 2579, 2699, 2711, 2729, 2861, 2879, 2957, 3041, 3089, 3167, 3191, 3209, 3221, 3407, 3719, 3761, 3779
Offset: 1
Keywords
Links
- Robert Israel, Table of n, a(n) for n = 1..10000
Programs
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Maple
select(t -> isprime(t) and isprime(2*t^3+1), [2, seq(i,i=5..10000,6)]); # Robert Israel, Aug 22 2019
Comments