freeCodeCamp/problem-447-retractions-c.english.md at 92377cf71af628cb5ea6b28ff7d6fa66a9b52449

mrugesh 22afc2a0ca feat(learn): python certification projects (#38216 )

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Beau Carnes <beaucarnes@gmail.com>

2020-05-27 13:19:08 +05:30

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id, challengeType, isHidden, title, forumTopicId

id	challengeType	isHidden	title	forumTopicId
5900f52c1000cf542c51003e	5	false	Problem 447: Retractions C	302119

Description

For every integer n>1, the family of functions fn,a,b is defined by fn,a,b(x)≡ax+b mod n for a,b,x integer and 0F(N)=∑R(n) for 2≤n≤N. F(107)≡638042271 (mod 1 000 000 007).

Find F(1014) (mod 1 000 000 007).

Instructions

Tests

tests:
  - text: <code>euler447()</code> should return 530553372.
    testString: assert.strictEqual(euler447(), 530553372);

Challenge Seed

function euler447() {
  // Good luck!
  return true;
}

euler447();

Solution

// solution required

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