Problem
NT-B2-M06-P016 The Number \(13^n-1\)
#16
★★★★☆ Level 4 of 5
Find \(v_3(13^n-1)\).
\(3\mid13-1\).
By LTE, \(v_3(13^n-1)=v_3(12)+v_3(n)=1+v_3(n)\).
Another parametric answer.