Q: Is 321,531,525 a Composite Number?

Why is 321,531,525 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 321,531,525 can be evenly divided by 1 3 5 7 9 15 21 25 27 35 45 63 75 81 105 135 175 189 225 243 315 405 525 567 675 945 1,215 1,575 1,701 2,025 2,835 4,725 6,075 7,561 8,505 14,175 22,683 37,805 42,525 52,927 68,049 113,415 158,781 189,025 204,147 264,635 340,245 476,343 567,075 612,441 793,905 1,020,735 1,323,175 1,429,029 1,701,225 1,837,323 2,381,715 3,062,205 3,969,525 4,287,087 5,103,675 7,145,145 9,186,615 11,908,575 12,861,261 15,311,025 21,435,435 35,725,725 45,933,075 64,306,305 107,177,175 and 321,531,525, with no remainder.

Since 321,531,525 cannot be divided by just 1 and 321,531,525, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).