## 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.

Problem ID: 287 (09 Sep 2006) Difficulty: 2 Star