Q: Is 251,370 a Composite Number?

Why is 251,370 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 251,370 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 18 19 21 27 30 35 38 42 45 49 54 57 63 70 90 95 98 105 114 126 133 135 147 171 189 190 210 245 266 270 285 294 315 342 378 399 441 490 513 570 630 665 735 798 855 882 931 945 1,026 1,197 1,323 1,330 1,470 1,710 1,862 1,890 1,995 2,205 2,394 2,565 2,646 2,793 3,591 3,990 4,410 4,655 5,130 5,586 5,985 6,615 7,182 8,379 9,310 11,970 13,230 13,965 16,758 17,955 25,137 27,930 35,910 41,895 50,274 83,790 125,685 and 251,370, with no remainder.

Since 251,370 cannot be divided by just 1 and 251,370, 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).