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I found this somewhere. I thought of sharing with everyone. Do try finding out numbers of such kind! (bigger than this)

Note by Aditya Kumar 2 years, 7 months ago

Easy Math Editor

*italics*

_italics_

**bold**

__bold__

- bulleted- list

1. numbered2. list

paragraph 1paragraph 2

paragraph 1

paragraph 2

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

> This is a quote

This is a quote

# I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world"

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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Next largest such prime is \(59393339\). There are only \(83\) such right-truncatable primes.

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Sir did you proved it or searched it internet

I've heard of this before, so I just looked up Truncatable Primes. But I don't think it's particularly difficult to prove that there's only a limited number, so that a quick computer search can find all of them.

@Michael Mendrin – Oh, can you suggest me some ways to do my RMO well

I think it is difficult to calculate that without using coding.

I think one can get such primes by coding. If its a number theory problem , its way too difficult for me...

Do give it a try :)

This is so far from me. Maybe one day, but not today.

\(23\)

Something bigger?

\(29\ddot \smile\)

@Akshat Sharda – Read the note carefully!

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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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TopNewestNext largest such prime is \(59393339\). There are only \(83\) such right-truncatable primes.

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Sir did you proved it or searched it internet

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I've heard of this before, so I just looked up Truncatable Primes. But I don't think it's particularly difficult to prove that there's only a limited number, so that a quick computer search can find all of them.

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I think it is difficult to calculate that without using coding.

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I think one can get such primes by coding. If its a number theory problem , its way too difficult for me...

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Do give it a try :)

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This is so far from me. Maybe one day, but not today.

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\(23\)

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Something bigger?

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\(29\ddot \smile\)

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