669278610

Appears in sequences

• Numbers k which, for some r, are r-digit maximizers of k/phi(k).at n=28A065800
• Smallest multiple of n with n distinct prime divisors.at n=8A076926
• Least common multiple of all cycle sizes in range [A014137(n-1)..A014138(n-1)] of permutation A089865/A089866.at n=13A089845
• a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ), when j=3.at n=17A098135
• Increasing sequence obtained by union of two sequences A136353 and {b(n)}, where b(n) is the smallest composite number m such that m-1 is prime and the set of distinct prime factors of m consists of the first n primes.at n=16A136356
• a(n) gives the denominators for A250031(n) as well as for A250032(n).at n=23A250033