Q: Is 1,272,705 a Composite Number?

Why is 1,272,705 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 1,272,705 can be evenly divided by 1 3 5 7 15 17 21 23 31 35 51 69 85 93 105 115 119 155 161 217 255 345 357 391 465 483 527 595 651 713 805 1,085 1,173 1,581 1,785 1,955 2,139 2,415 2,635 2,737 3,255 3,565 3,689 4,991 5,865 7,905 8,211 10,695 11,067 12,121 13,685 14,973 18,445 24,955 36,363 41,055 55,335 60,605 74,865 84,847 181,815 254,541 424,235 and 1,272,705, with no remainder.

Since 1,272,705 cannot be divided by just 1 and 1,272,705, 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).