773

This number is a prime.

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

Replacing each digit of prime 773 with its square respectively its cube results in two new primes 49499 and 34334327. Note that this latter number is also an emirp (72343343). [De Geest]

The number 3 followed by 773 7's is prime. [De Geest]