39841

Properties

Appears in sequences

• Primes with 31 as smallest positive primitive root.at n=3A061735
• Primes of the form f(n) = 9*n^4 - 444*n^3 + 8059*n^2 - 63714*n + 185371 listed by increasing value of n >= 0.at n=21A117225
• Prime numbers p such that p +- ((p-1)/4) are primes.at n=36A137705
• Prime numbers p such that p +- ((p-1)/5) are primes.at n=31A137714
• Primes which are digital reversals of products of "emirpimes" pairs.at n=1A159238
• a(1)=2, a(2)=2, a(n)=a(n-2)+floor(a(n-2)*a(n-1)/(a(n-2)+a(n-1))).at n=47A173091
• Primes of the form (k^2+7)/11.at n=31A242930
• a(n) is the number of 2n-celled fixed polyominoes with at least 180 degree rotational symmetry about a vertex of a square in the lattice.at n=9A390655
• Prime numbersat n=4188