1789

This number is a prime.

Just showing those entries submitted by 'Loungrides': (Click here to show all)

+ The largest emirp formed from the sum of two digits followed from a concatenation of these digits. [Loungrides]

+ The smallest emirp whose sum of digits is an odd composite number. [Loungrides]

+ The "Storming of the Bastille" occurred in 1789. [Loungrides]

+ Another emirp is created if the internal digits of 1789 are switched. It is the smallest 4-digit distinct-digit emirp with this property. [Loungrides]

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