Q: Is 31,211,310 a Composite Number?

Why is 31,211,310 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 31,211,310 can be evenly divided by 1 2 3 5 6 10 13 15 26 30 39 65 78 130 191 195 382 390 419 573 838 955 1,146 1,257 1,910 2,095 2,483 2,514 2,865 4,190 4,966 5,447 5,730 6,285 7,449 10,894 12,415 12,570 14,898 16,341 24,830 27,235 32,682 37,245 54,470 74,490 80,029 81,705 160,058 163,410 240,087 400,145 480,174 800,290 1,040,377 1,200,435 2,080,754 2,400,870 3,121,131 5,201,885 6,242,262 10,403,770 15,605,655 and 31,211,310, with no remainder.

Since 31,211,310 cannot be divided by just 1 and 31,211,310, 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).