1301

1301 is a prime number.

1301 has a representation as a sum of two squares: 1301 = 25² + 26².

1301 and 1303 form a twin prime pair.

1301 is the hypotenuse of a primitive Pythagorean triple: 1301² = 51² + 1300².

1301 can be represented as 2⁴ 3⁴ + 5.

Bromotrifluoromethane, also known by the trade name Halon 1301, is a colorless, odorless gas that was used to extinguish fires.

Source: Prime Curios!