827

This number is a prime.

There are 827 Ulam numbers below ten thousand.

The smallest prime formed from the concatenation of two consecutive cubes. [Gupta]

The Unabridged Running Press Edition of the American classic Gray's Anatomy contains 827 illustrations.

The smallest prime number such that the sum of itself and its prime index (144) is another prime number (971) with the same sum of digits (17). [Gaydos]

The largest distinct-digit prime whose the reversal is a nude number, i.e., a number that is divisible by all of its digits. [Loungrides]

827, the 144th prime, is the smallest pₙ such that p ± n are both prime and p × n ± 1 are twin primes. [Ahmed]