38 lines
524 B
Markdown
38 lines
524 B
Markdown
---
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id: 5900f48f1000cf542c50ffa1
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title: 'Problem 290: Digital Signature'
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challengeType: 5
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forumTopicId: 301942
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---
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# --description--
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How many integers 0 ≤ n < 1018 have the property that the sum of the digits of n equals the sum of digits of 137n?
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# --hints--
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`euler290()` should return 20444710234716470.
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```js
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assert.strictEqual(euler290(), 20444710234716470);
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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 euler290() {
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return true;
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}
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euler290();
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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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