251 is the smallest number that is the sum of three different cubes in two ways: 251 = 13 + 53 + 53 = 23 + 33 + 63.
251 can be expressed using the first three primes: 251 = 23 + 33.
251 is a divisor of 205 - 1.
Telephone area code 251 covers southwestern Alabama.
Source: Prime Curios!
Telephone area code 251 covers southwestern Alabama.
Source: Prime Curios!