Q: Is 121,800 a Composite Number?

Why is 121,800 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 121,800 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 25 28 29 30 35 40 42 50 56 58 60 70 75 84 87 100 105 116 120 140 145 150 168 174 175 200 203 210 232 280 290 300 348 350 406 420 435 525 580 600 609 696 700 725 812 840 870 1,015 1,050 1,160 1,218 1,400 1,450 1,624 1,740 2,030 2,100 2,175 2,436 2,900 3,045 3,480 4,060 4,200 4,350 4,872 5,075 5,800 6,090 8,120 8,700 10,150 12,180 15,225 17,400 20,300 24,360 30,450 40,600 60,900 and 121,800, with no remainder.

Since 121,800 cannot be divided by just 1 and 121,800, 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).