Q: Is 21,025,000 a Composite Number?

Why is 21,025,000 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 21,025,000 can be evenly divided by 1 2 4 5 8 10 20 25 29 40 50 58 100 116 125 145 200 232 250 290 500 580 625 725 841 1,000 1,160 1,250 1,450 1,682 2,500 2,900 3,125 3,364 3,625 4,205 5,000 5,800 6,250 6,728 7,250 8,410 12,500 14,500 16,820 18,125 21,025 25,000 29,000 33,640 36,250 42,050 72,500 84,100 90,625 105,125 145,000 168,200 181,250 210,250 362,500 420,500 525,625 725,000 841,000 1,051,250 2,102,500 2,628,125 4,205,000 5,256,250 10,512,500 and 21,025,000, with no remainder.

Since 21,025,000 cannot be divided by just 1 and 21,025,000, 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).