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 Solvers89
Suggested Problems
-
Remove the small words from a list of words.
1566 Solvers
-
Arrange Vector in descending order
13996 Solvers
-
913 Solvers
-
Multiples of a Number in a Given Range
946 Solvers
-
944 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.