Q: Is 21,323,040 a Composite Number?

Why is 21,323,040 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 21,323,040 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 80 93 96 120 124 155 160 186 240 248 310 372 465 480 496 620 744 930 992 1,240 1,433 1,488 1,860 2,480 2,866 2,976 3,720 4,299 4,960 5,732 7,165 7,440 8,598 11,464 14,330 14,880 17,196 21,495 22,928 28,660 34,392 42,990 44,423 45,856 57,320 68,784 85,980 88,846 114,640 133,269 137,568 171,960 177,692 222,115 229,280 266,538 343,920 355,384 444,230 533,076 666,345 687,840 710,768 888,460 1,066,152 1,332,690 1,421,536 1,776,920 2,132,304 2,665,380 3,553,840 4,264,608 5,330,760 7,107,680 10,661,520 and 21,323,040, with no remainder.

Since 21,323,040 cannot be divided by just 1 and 21,323,040, 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).