293 is the natural number following 292 and preceding 294.
In mathematics
293 is:
- a prime number,
- a Pythagorean prime,
- a Sophie Germain prime
- a Chen prime
- strictly trivially polygonal (number n that is polygonal in only 2 ways: 2-gonal and n-gonal)
- equivalent to the sum of the first three tetradic primes. Tetradic numbers are numbers that are the same if written backwards, flipped upside-down, or mirrored upside-down and tetradic primes are tetradic numbers that are also prime. It is the sum of 11 101 181.
- the sum of perfect cubes 2³ 2³ 3³ 5³ 5³
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