176081

Properties

Appears in sequences

• a(n) = prime(1000 * n).at n=15A031922
• a(1) = 1, a(2) = 2; for n > 2, a(n) = the smallest prime divisor of the number formed by the concatenation of a(1) to a(n-1) that has not previously appeared in the sequence.at n=9A330293
• Primes at which the prime race among 10k+1, 10k+3, 10k+7, and 10k+9 produces a specific 4-way ranking (1st, 2nd, 3rd, 4th place in the race) for the first time.at n=10A390417
• Prime numbersat n=16000