Q: Is 265,664 a Prime Number?
A: No, 265,664 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 265664 can be evenly divided by 1 2 4 7 8 14 16 28 32 56 64 112 224 448 593 1,186 2,372 4,151 4,744 8,302 9,488 16,604 18,976 33,208 37,952 66,416 132,832 and 265,664, with no remainder.
Since 265,664 cannot be divided by just 1 and 265,664, it is not a prime number.