Q: Is 21,310,002 a Composite Number?

Why is 21,310,002 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 21,310,002 can be evenly divided by 1 2 3 6 7 9 14 18 21 37 42 49 63 74 98 111 126 147 222 259 294 333 441 518 653 666 777 882 1,306 1,554 1,813 1,959 2,331 3,626 3,918 4,571 4,662 5,439 5,877 9,142 10,878 11,754 13,713 16,317 24,161 27,426 31,997 32,634 41,139 48,322 63,994 72,483 82,278 95,991 144,966 169,127 191,982 217,449 287,973 338,254 434,898 507,381 575,946 1,014,762 1,183,889 1,522,143 2,367,778 3,044,286 3,551,667 7,103,334 10,655,001 and 21,310,002, with no remainder.

Since 21,310,002 cannot be divided by just 1 and 21,310,002, 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).