Q: Is 21,867,100 a Composite Number?

Why is 21,867,100 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 21,867,100 can be evenly divided by 1 2 4 5 10 17 19 20 25 34 38 50 68 76 85 95 100 170 190 323 340 380 425 475 646 677 850 950 1,292 1,354 1,615 1,700 1,900 2,708 3,230 3,385 6,460 6,770 8,075 11,509 12,863 13,540 16,150 16,925 23,018 25,726 32,300 33,850 46,036 51,452 57,545 64,315 67,700 115,090 128,630 218,671 230,180 257,260 287,725 321,575 437,342 575,450 643,150 874,684 1,093,355 1,150,900 1,286,300 2,186,710 4,373,420 5,466,775 10,933,550 and 21,867,100, with no remainder.

Since 21,867,100 cannot be divided by just 1 and 21,867,100, 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).