124153

Properties

Appears in sequences

• Smallest prime having least positive primitive root n, or 0 if no such prime exists.at n=29A023048
• Primes with 30 as smallest positive primitive root.at n=0A061734
• Primes of the form k^2 + prime(k) + 1.at n=28A063461
• 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=22A133432
• Number of 9X2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2*n^2 (number of collections of 9 zero-sum 2-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=18A192709
• Smallest number with n as least nonnegative primitive root, or 0 if no such number exists.at n=30A214158
• A family of marked Motzkin-like paths.at n=17A374585
• Prime numbersat n=11662