36721

Properties

Appears in sequences

• Primes with record values of the least positive primitive root.at n=10A002230
• Smallest prime having least positive primitive root n, or 0 if no such prime exists.at n=36A023048
• Primes that remain prime through 4 iterations of function f(x) = 10x + 9.at n=13A023329
• Primes of the form j^2 + (j+1)^2.at n=43A027862
• Primes with 37 as smallest positive primitive root.at n=0A061739
• Numbers having exactly four anti-divisors.at n=26A066469
• Prime hypotenuses of Pythagorean triangles with a prime leg.at n=14A067756
• Smallest prime p such that the least positive primitive root of p equals prime(n).at n=11A079061
• Let m = n-th number that is not a perfect power, A007916(n). Then a(n) = smallest prime having least positive primitive root m.at n=27A133432
• Pythagorean triangle side lengths triples with two lengths prime.at n=44A140391
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (0, 0, 1), (1, -1, 1), (1, 1, -1)}.at n=10A148381
• Primes of the form 50n^2 + 10n + 1.at n=14A154428
• Primes p such that (p reversed) +6 is a square.at n=14A167472
• Primes of the form (p^k + k - 1)/k for prime p and some k > 1.at n=21A230444
• Primes of the form (p^k+1)/2 where p is prime and k > 1.at n=19A308442
• Numbers k such that -3 is a quadratic residue (not necessarily coprime) modulo k, k + 1, k + 2 and k + 3.at n=19A318527
• Primes dividing nonzero terms in A002065.at n=41A328704
• a(n) is the smallest positive integer which can be represented as the sum of n distinct nonzero square pyramidal numbers in exactly n ways, or -1 if no such integer exists.at n=21A360218
• Lexicographically earliest sequence of numbers whose partial products are all Fermat pseudoprimes to base 2 (A001567).at n=9A374027
• Number of permutations (p(1),p(2),...,p(n)) of (1,2,...,n) such that p(i)-i is in {-2,-1,4} for all i=1,...,n.at n=39A376743