820 B
820 B
id | title | challengeType | forumTopicId | dashedName |
---|---|---|---|---|
5900f4151000cf542c50ff27 | Problem 168: Number Rotations | 5 | 301802 | problem-168-number-rotations |
--description--
Consider the number 142857. We can right-rotate this number by moving the last digit (7) to the front of it, giving us 714285.
It can be verified that 714285 = 5 × 142857
.
This demonstrates an unusual property of 142857: it is a divisor of its right-rotation.
Find the last 5 digits of the sum of all integers n
, 10 < n < 10100
, that have this property.
--hints--
numberRotations()
should return 59206
.
assert.strictEqual(numberRotations(), 59206);
--seed--
--seed-contents--
function numberRotations() {
return true;
}
numberRotations();
--solutions--
// solution required