Q: Is 21,213,000 a Composite Number?

Why is 21,213,000 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 21,213,000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 60 72 75 90 100 120 125 150 180 200 225 250 300 360 375 450 500 600 750 900 1,000 1,125 1,500 1,800 2,250 2,357 3,000 4,500 4,714 7,071 9,000 9,428 11,785 14,142 18,856 21,213 23,570 28,284 35,355 42,426 47,140 56,568 58,925 70,710 84,852 94,280 106,065 117,850 141,420 169,704 176,775 212,130 235,700 282,840 294,625 353,550 424,260 471,400 530,325 589,250 707,100 848,520 883,875 1,060,650 1,178,500 1,414,200 1,767,750 2,121,300 2,357,000 2,651,625 3,535,500 4,242,600 5,303,250 7,071,000 10,606,500 and 21,213,000, with no remainder.

Since 21,213,000 cannot be divided by just 1 and 21,213,000, 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).