# 9173

This number is a prime.

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The largest emirp formed with the four digits that can end multidigit primes. [Loungrides]

The largest left-truncatable prime (emirp) consisted of only odd distinct digits. [Loungrides]

The larger of only two emirps with distinct digits in English alphabetical order (Nine, One, Seven, Three). The other is 73. [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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