Q: Is 145,530 a Composite Number?

Why is 145,530 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 145,530 can be evenly divided by 1 2 3 5 6 7 9 10 11 14 15 18 21 22 27 30 33 35 42 45 49 54 55 63 66 70 77 90 98 99 105 110 126 135 147 154 165 189 198 210 231 245 270 294 297 315 330 378 385 441 462 490 495 539 594 630 693 735 770 882 945 990 1,078 1,155 1,323 1,386 1,470 1,485 1,617 1,890 2,079 2,205 2,310 2,646 2,695 2,970 3,234 3,465 4,158 4,410 4,851 5,390 6,615 6,930 8,085 9,702 10,395 13,230 14,553 16,170 20,790 24,255 29,106 48,510 72,765 and 145,530, with no remainder.

Since 145,530 cannot be divided by just 1 and 145,530, 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).