Q: Is 21,336,315 a Composite Number?

Why is 21,336,315 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 21,336,315 can be evenly divided by 1 3 5 7 11 13 15 21 29 33 35 39 49 55 65 77 87 91 105 143 145 147 165 195 203 231 245 273 319 343 377 385 429 435 455 539 609 637 715 735 957 1,001 1,015 1,029 1,131 1,155 1,365 1,421 1,595 1,617 1,715 1,885 1,911 2,145 2,233 2,639 2,695 3,003 3,045 3,185 3,773 4,147 4,263 4,459 4,785 5,005 5,145 5,655 6,699 7,007 7,105 7,917 8,085 9,555 9,947 11,165 11,319 12,441 13,195 13,377 15,015 15,631 18,473 18,865 20,735 21,021 21,315 22,295 29,029 29,841 33,495 35,035 39,585 46,893 49,049 49,735 55,419 56,595 62,205 66,885 78,155 87,087 92,365 105,105 109,417 129,311 145,145 147,147 149,205 203,203 234,465 245,245 277,095 328,251 387,933 435,435 547,085 609,609 646,555 735,735 1,016,015 1,422,421 1,641,255 1,939,665 3,048,045 4,267,263 7,112,105 and 21,336,315, with no remainder.

Since 21,336,315 cannot be divided by just 1 and 21,336,315, 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).