Q: Is 31,121,415 a Composite Number?

Why is 31,121,415 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 31,121,415 can be evenly divided by 1 3 5 9 13 15 23 27 39 45 65 69 81 115 117 135 195 207 257 299 345 351 405 585 621 771 897 1,035 1,053 1,285 1,495 1,755 1,863 2,313 2,691 3,105 3,341 3,855 4,485 5,265 5,911 6,939 8,073 9,315 10,023 11,565 13,455 16,705 17,733 20,817 24,219 29,555 30,069 34,695 40,365 50,115 53,199 76,843 88,665 90,207 104,085 121,095 150,345 159,597 230,529 265,995 270,621 384,215 451,035 478,791 691,587 797,985 1,152,645 1,353,105 2,074,761 2,393,955 3,457,935 6,224,283 10,373,805 and 31,121,415, with no remainder.

Since 31,121,415 cannot be divided by just 1 and 31,121,415, 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).