Q: Is 1,561,344 a Composite Number?

Why is 1,561,344 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 1,561,344 can be evenly divided by 1 2 3 4 6 8 12 16 19 24 32 38 48 57 64 76 96 107 114 128 152 192 214 228 256 304 321 384 428 456 608 642 768 856 912 1,216 1,284 1,712 1,824 2,033 2,432 2,568 3,424 3,648 4,066 4,864 5,136 6,099 6,848 7,296 8,132 10,272 12,198 13,696 14,592 16,264 20,544 24,396 27,392 32,528 41,088 48,792 65,056 82,176 97,584 130,112 195,168 260,224 390,336 520,448 780,672 and 1,561,344, with no remainder.

Since 1,561,344 cannot be divided by just 1 and 1,561,344, 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).