Q: Is 21,376,368 a Composite Number?

Why is 21,376,368 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 21,376,368 can be evenly divided by 1 2 3 4 6 8 9 12 13 16 18 19 24 26 36 38 39 48 52 57 72 76 78 104 114 117 144 152 156 171 208 228 234 247 304 312 342 456 468 494 601 624 684 741 912 936 988 1,202 1,368 1,482 1,803 1,872 1,976 2,223 2,404 2,736 2,964 3,606 3,952 4,446 4,808 5,409 5,928 7,212 7,813 8,892 9,616 10,818 11,419 11,856 14,424 15,626 17,784 21,636 22,838 23,439 28,848 31,252 34,257 35,568 43,272 45,676 46,878 62,504 68,514 70,317 86,544 91,352 93,756 102,771 125,008 137,028 140,634 148,447 182,704 187,512 205,542 274,056 281,268 296,894 375,024 411,084 445,341 548,112 562,536 593,788 822,168 890,682 1,125,072 1,187,576 1,336,023 1,644,336 1,781,364 2,375,152 2,672,046 3,562,728 5,344,092 7,125,456 10,688,184 and 21,376,368, with no remainder.

Since 21,376,368 cannot be divided by just 1 and 21,376,368, 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).