57481

Appears in sequences

• a(n) is the least index such that the least primitive root of the a(n)-th prime is n, or zero if no such prime exists.at n=58A066529
• Least k such that the least positive primitive root of prime(k) equals prime(n).at n=16A079060
• Semiprimes in A054556.at n=32A113693
• First occurrence of n in A212844.at n=17A213085