79421

Appears in sequences

• Becomes prime after n iterations of f(x) = phi(x)+1 (least inverse of A039651).at n=15A039652
• n for which A079277(n) + phi(n) < n.at n=36A208815
• Semiprimes of the form n^3 - 2*n.at n=8A240436
• a(n) = n^3 - 2*n.at n=43A242135
• Composite numbers k such that the sum of their aliquot parts divides k+1.at n=17A306532
• Non-prime-powers k at which the variance of the first differences of the logarithms of the divisors of k, scaled by log(k), reaches a new minimum.at n=16A323729
• Numbers of the form h^i + k^j where h,i,j,k are distinct positive integers and max{h,i,j,k} - min{h,i,j,k} = 3.at n=38A391670