Q: Is 21,219,996 a Composite Number?

Why is 21,219,996 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 21,219,996 can be evenly divided by 1 2 3 4 6 7 12 14 21 28 29 31 42 58 62 84 87 93 116 124 174 186 203 217 281 348 372 406 434 562 609 651 812 843 868 899 1,124 1,218 1,302 1,686 1,798 1,967 2,436 2,604 2,697 3,372 3,596 3,934 5,394 5,901 6,293 7,868 8,149 8,711 10,788 11,802 12,586 16,298 17,422 18,879 23,604 24,447 25,172 26,133 32,596 34,844 37,758 48,894 52,266 57,043 60,977 75,516 97,788 104,532 114,086 121,954 171,129 182,931 228,172 243,908 252,619 342,258 365,862 505,238 684,516 731,724 757,857 1,010,476 1,515,714 1,768,333 3,031,428 3,536,666 5,304,999 7,073,332 10,609,998 and 21,219,996, with no remainder.

Since 21,219,996 cannot be divided by just 1 and 21,219,996, 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).