133811

Properties

Appears in sequences

• Smallest prime factor of the concatenation of terms of the n-th row of the Stirling's number of the second kind.at n=49A100757
• Primes p with A047967(p) also prime.at n=28A236418
• Expansion of 1/(1 - Sum_{k>=2} floor(bigomega(k)/2)*floor(2/bigomega(k))*x^k), where bigomega(k) is the number of prime divisors of k counted with multiplicity (A001222).at n=61A280238
• Prime numbersat n=12482