73370

Appears in sequences

• Numbers k such that 477*2^k+1 is prime.at n=40A319487
• Lesser of amicable pair m < n defined by t(n) = m and t(m) = n where t(n) = psi(n) - n and psi(n) = A001615(n) is the Dedekind psi function.at n=27A323329
• Smallest starting x which reaches the Antihydra halting condition for the first time at 3*n+1 terms of the iteration x -> floor(3*x/2).at n=26A385150