Q: Is 1,550,000 a Composite Number?

Why is 1,550,000 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 1,550,000 can be evenly divided by 1 2 4 5 8 10 16 20 25 31 40 50 62 80 100 124 125 155 200 248 250 310 400 496 500 620 625 775 1,000 1,240 1,250 1,550 2,000 2,480 2,500 3,100 3,125 3,875 5,000 6,200 6,250 7,750 10,000 12,400 12,500 15,500 19,375 25,000 31,000 38,750 50,000 62,000 77,500 96,875 155,000 193,750 310,000 387,500 775,000 and 1,550,000, with no remainder.

Since 1,550,000 cannot be divided by just 1 and 1,550,000, 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).