Q: Is 2,106,780 a Composite Number?

Why is 2,106,780 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 2,106,780 can be evenly divided by 1 2 3 4 5 6 10 12 13 15 20 26 30 37 39 52 60 65 73 74 78 111 130 146 148 156 185 195 219 222 260 292 365 370 390 438 444 481 555 730 740 780 876 949 962 1,095 1,110 1,443 1,460 1,898 1,924 2,190 2,220 2,405 2,701 2,847 2,886 3,796 4,380 4,745 4,810 5,402 5,694 5,772 7,215 8,103 9,490 9,620 10,804 11,388 13,505 14,235 14,430 16,206 18,980 27,010 28,470 28,860 32,412 35,113 40,515 54,020 56,940 70,226 81,030 105,339 140,452 162,060 175,565 210,678 351,130 421,356 526,695 702,260 1,053,390 and 2,106,780, with no remainder.

Since 2,106,780 cannot be divided by just 1 and 2,106,780, 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).