593 (five hundred [and] ninety-three) is the natural number following 592 and preceding 594.
In mathematics 593 is the 108th prime number. It is also a Sophie Germain prime, a right-truncatable prime, a Pythagorean prime, a balanced prime, and a Ramanujan prime. 593 is an example of what Paul Erdős and Ernst G. Straus called a good prime, or a prime whose square is greater than the product of its neighboring two primes.
593 is most notable for being a Leyland number, since it can be expressed in the form , specifically as:
But since it is prime, it is also a Leyland prime, most specifically the second one.
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