Given an integer x which contains d digits, find the value of (minimum) n (n > 1) such that the last d digits of x^n is equal to x. If the last d digits will never equal x, return inf.
Example 1:
- x = 2; (therefore d = 1)
- 2^2 = 4, 2^3 = 8, 2^4 = 16, 2^5 = 32
- n = 5;
Example 2:
- x = 10; (therefore d = 2)
- 10^2 = 100, 10^3 = 1000, etc
- n = inf;
Solution Stats
Problem Comments
3 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers90
Suggested Problems
-
Number of 1s in a binary string
11634 Solvers
-
Getting the indices from a matrix
735 Solvers
-
278 Solvers
-
18630 Solvers
-
82 Solvers
More from this Author4
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
is it correct for 35197? Im getting 5001 instead of inf.
I also get 5001.
10016 and 10081 have another valid answer: 1251 (besides 626). The problem should accept them or request the minimum exponent.