45 lines
627 B
Markdown
45 lines
627 B
Markdown
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---
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id: 5900f52c1000cf542c51003d
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title: 'Problem 446: Retractions B'
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challengeType: 5
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forumTopicId: 302118
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dashedName: problem-446-retractions-b
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---
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# --description--
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For every integer n>1, the family of functions fn,a,b is defined
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by fn,a,b(x)≡ax+b mod n for a,b,x integer and 0
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F(N)=∑R(n4+4) for 1≤n≤N. F(1024)=77532377300600.
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Find F(107) (mod 1 000 000 007)
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# --hints--
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`euler446()` should return 907803852.
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```js
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assert.strictEqual(euler446(), 907803852);
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```
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# --seed--
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## --seed-contents--
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```js
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function euler446() {
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return true;
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}
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euler446();
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```
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# --solutions--
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```js
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// solution required
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```
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