This number is a prime.
Cartoon character Bugs Bunny once calculated 1297 times 142 in his head and said, "If there's one thing we 'wabbits' (rabbits) can do, it's multiply." [Allen]
This is the smallest 4-digit prime that produces 5 other primes by changing only its first digit (i.e., 2297, 4297, 5297, 7297, 8297 are primes). [Opao]
The reversal of this prime is a prime square, and the square of this prime has a prime reversal. Can you find the next prime like this? [Silva]