freeCodeCamp

917 B

Raw Blame History

id	challengeType	title	forumTopicId
5900f3f11000cf542c50ff03	5	Problem 132: Large repunit factors	301760

Description

A number consisting entirely of ones is called a repunit. We shall define R(k) to be a repunit of length k. For example, R(10) = 1111111111 = 11×41×271×9091, and the sum of these prime factors is 9414. Find the sum of the first forty prime factors of R(109).

Instructions

Tests

tests:
  - text: <code>euler132()</code> should return 843296.
    testString: assert.strictEqual(euler132(), 843296);

Challenge Seed

function euler132() {
  // Good luck!
  return true;
}

euler132();

Solution

// solution required

917 B Raw Blame History Unescape Escape