Q: Is 265,221 a Prime Number?
A: No, 265,221 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 265221 can be evenly divided by 1 3 9 11 19 27 33 47 57 99 141 171 209 297 423 513 517 627 893 1,269 1,551 1,881 2,679 4,653 5,643 8,037 9,823 13,959 24,111 29,469 88,407 and 265,221, with no remainder.
Since 265,221 cannot be divided by just 1 and 265,221, it is not a prime number.