Q: Is 21,448 a Prime Number?
A: No, 21,448 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 21448 can be evenly divided by 1 2 4 7 8 14 28 56 383 766 1,532 2,681 3,064 5,362 10,724 and 21,448, with no remainder.
Since 21,448 cannot be divided by just 1 and 21,448, it is not a prime number.