8978569
domain: N
Appears in sequences
- Smallest number m such that the trajectory of m under iteration of Euler's totient function phi(n) [A000010] contains exactly n distinct numbers, including m and the fixed point.at n=24A007755
- Smallest nonprime number which if used as initial term for iteration of the A000010[x] function, results in list-to-fixed-point of length=n, or 0 if no such number exists.at n=24A098196
- Smallest k such that phi(phi(k)) = 2^n, where phi is the Euler totient function.at n=21A184968
- Composite terms of A007755.at n=6A309672