Q: Is 420,421,404 a Composite Number?

Why is 420,421,404 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 420,421,404 can be evenly divided by 1 2 3 4 6 12 13 26 39 52 78 89 107 156 178 214 267 283 321 356 428 534 566 642 849 1,068 1,132 1,157 1,284 1,391 1,698 2,314 2,782 3,396 3,471 3,679 4,173 4,628 5,564 6,942 7,358 8,346 9,523 11,037 13,884 14,716 16,692 19,046 22,074 25,187 28,569 30,281 38,092 44,148 50,374 57,138 60,562 75,561 90,843 100,748 114,276 121,124 123,799 151,122 181,686 247,598 302,244 327,431 363,372 371,397 393,653 495,196 654,862 742,794 787,306 982,293 1,180,959 1,309,724 1,485,588 1,574,612 1,964,586 2,361,918 2,695,009 3,929,172 4,723,836 5,390,018 8,085,027 10,780,036 16,170,054 32,340,108 35,035,117 70,070,234 105,105,351 140,140,468 210,210,702 and 420,421,404, with no remainder.

Since 420,421,404 cannot be divided by just 1 and 420,421,404, 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).