Q: Is 1,555,560 a Composite Number?

Why is 1,555,560 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 1,555,560 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 29 30 36 40 45 58 60 72 87 90 116 120 145 149 174 180 232 261 290 298 348 360 435 447 522 580 596 696 745 870 894 1,044 1,160 1,192 1,305 1,341 1,490 1,740 1,788 2,088 2,235 2,610 2,682 2,980 3,480 3,576 4,321 4,470 5,220 5,364 5,960 6,705 8,642 8,940 10,440 10,728 12,963 13,410 17,284 17,880 21,605 25,926 26,820 34,568 38,889 43,210 51,852 53,640 64,815 77,778 86,420 103,704 129,630 155,556 172,840 194,445 259,260 311,112 388,890 518,520 777,780 and 1,555,560, with no remainder.

Since 1,555,560 cannot be divided by just 1 and 1,555,560, 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).