RSS
String Of Ones
Problem
A number consisting entirely of the digit one is called a repunit; for example, 11111.
Find the smallest repunit that is divisible by 63.
Problem ID: 287 (09 Sep 2006) Difficulty: 2 Star
A number consisting entirely of the digit one is called a repunit; for example, 11111.
Find the smallest repunit that is divisible by 63.
Show Solution
Hide Solution