293

293 is a prime number.

293 is a Sophie Germain prime because 2 x 293 + 1 = 587, which is also a prime.

293 has a representation as a sum of two squares: 293= 2² + 17².

293 is the hypotenuse of a primitive Pythagorean triple: 293² = 68² + 285².

293 Brasilia is a large asteroid discovered in 1893.

Source: Prime Curios!