This number is a prime.
Victor Hugo's Les Misérables contains one of the longest sentences (823 words without a period) in the French language.
The "823-year" claim is a myth. [Kher]
823 = 12345/(1+2+3+4+5). The only known prime with this
The first of nine consecutive primes that are all
Yarborough primes. [Gaydos]
The larger of only two 3-digit primes p, such that its
square p^2 is a concatenation of three double-digit primes,
i.e., 823^2 = 677329. [Loungrides]
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