Q: Is 7,781,640 a Composite Number?

Why is 7,781,640 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 7,781,640 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 19 20 24 30 38 40 57 60 76 95 114 120 152 190 228 285 380 456 570 760 1,140 2,280 3,413 6,826 10,239 13,652 17,065 20,478 27,304 34,130 40,956 51,195 64,847 68,260 81,912 102,390 129,694 136,520 194,541 204,780 259,388 324,235 389,082 409,560 518,776 648,470 778,164 972,705 1,296,940 1,556,328 1,945,410 2,593,880 3,890,820 and 7,781,640, with no remainder.

Since 7,781,640 cannot be divided by just 1 and 7,781,640, 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).