156601

Properties

Appears in sequences

• Smallest prime having least positive primitive root n, or 0 if no such prime exists.at n=40A023048
• Smallest prime p such that the least positive primitive root of p equals prime(n).at n=12A079061
• Primes with 41 as smallest positive primitive root.at n=0A114658
• 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=31A133432
• Centered 15-gonal (or pentadecagonal) primes.at n=28A264822
• Numbers k such that k*(k+1) divides tribonacci(k) (A000073(k)).at n=34A299156
• Indices of tetrahedral numbers that are Fermat pseudoprimes to base 2.at n=10A321866
• a(n)/A002939(n+1) is the Kirchhoff index of the join of the disjoint union of two complete graphs on n vertices with the empty graph on n+1 vertices.at n=20A338109
• Numbers k such that one of k, k+1, k+2 is prime and the other two are semiprimes, and one of R(n), R(n+1), R(n+2) is prime and the other two are semiprimes, where R = A004086.at n=32A354285
• Prime numbersat n=14401