Q: Is 3,126,780 a Composite Number?

Why is 3,126,780 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 3,126,780 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 29 30 36 45 58 60 87 90 116 145 174 180 261 290 348 435 522 580 599 870 1,044 1,198 1,305 1,740 1,797 2,396 2,610 2,995 3,594 5,220 5,391 5,990 7,188 8,985 10,782 11,980 17,371 17,970 21,564 26,955 34,742 35,940 52,113 53,910 69,484 86,855 104,226 107,820 156,339 173,710 208,452 260,565 312,678 347,420 521,130 625,356 781,695 1,042,260 1,563,390 and 3,126,780, with no remainder.

Since 3,126,780 cannot be divided by just 1 and 3,126,780, 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).