Q: Is 3,900,225 a Composite Number?

Why is 3,900,225 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 3,900,225 can be evenly divided by 1 3 5 7 15 17 19 21 23 25 35 51 57 69 75 85 95 105 115 119 133 161 175 255 285 323 345 357 391 399 425 437 475 483 525 575 595 665 805 969 1,173 1,275 1,311 1,425 1,615 1,725 1,785 1,955 1,995 2,185 2,261 2,415 2,737 2,975 3,059 3,325 4,025 4,845 5,865 6,555 6,783 7,429 8,075 8,211 8,925 9,177 9,775 9,975 10,925 11,305 12,075 13,685 15,295 22,287 24,225 29,325 32,775 33,915 37,145 41,055 45,885 52,003 56,525 68,425 76,475 111,435 156,009 169,575 185,725 205,275 229,425 260,015 557,175 780,045 1,300,075 and 3,900,225, with no remainder.

Since 3,900,225 cannot be divided by just 1 and 3,900,225, 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).