This number is a composite.

+ The 378th prime plus 378 is prime. [Opao]

+ The smallest number n which is not a cube but is equal to sum of cubes of distinct prime factors of n. [Gupta]

+ 378 is the sum of the squares of the first six prime squares plus one. [Saidaziz]

+ The sum of all supersingular primes. [Pizer]

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