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Show that there are infinite positive integers \(n\) such that \( n+1\) divides \(5^n - 1 \).

Note by Lucas Nascimento 1 year, 6 months ago

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2 \times 3

2^{34}

a_{i-1}

\frac{2}{3}

\sqrt{2}

\sum_{i=1}^3

\sin \theta

\boxed{123}

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By Fermat's little Theorem, all numbers n other the 4 which are 1 less than a prime number satisfies the condition.

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With the exception of 4? No?

Yes thanks I forgot to mention that.

Correct.

Correct!

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Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

`> This is a quote`

Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

## Comments

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TopNewestBy Fermat's little Theorem, all numbers n other the 4 which are 1 less than a prime number satisfies the condition.

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With the exception of 4? No?

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Yes thanks I forgot to mention that.

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Correct.

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Correct!

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