244

244 = 2² x 61.

244 has a representation as a sum of two squares: 244 = 10² + 12². It is the second smallest sum of squares a² + b² where both a and b have more than one prime factor.

244 is the smallest number (besides 2) that can be written as a sum of two squares (above) or the sum of two fifth powers: 244 = 3⁵ + 1⁵.

244 has the representation 244 = 2⁸ - 12.

244 is a divisor of 13³ - 1.

The Tupolev Tu-244 was a proposed supersonic transport, but the project was cancelled in 1993.

Source: Prime Curios!