id	title	challengeType	forumTopicId	dashedName
5900f3f11000cf542c50ff03	Problem 132: Large repunit factors	5	301760	problem-132-large-repunit-factors

--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({10}^9).

--hints--

largeRepunitFactors() should return 843296.

assert.strictEqual(largeRepunitFactors(), 843296);

function largeRepunitFactors() {

  return true;
}

largeRepunitFactors();

// solution required