Q: Is 122,121,200 a Prime Number?

Why is 122,121,200 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 122121200 can be evenly divided by 1 2 4 5 8 10 16 17 20 25 34 40 50 68 80 85 100 136 170 200 272 340 400 425 680 850 1,360 1,700 3,400 6,800 17,959 35,918 71,836 89,795 143,672 179,590 287,344 305,303 359,180 448,975 610,606 718,360 897,950 1,221,212 1,436,720 1,526,515 1,795,900 2,442,424 3,053,030 3,591,800 4,884,848 6,106,060 7,183,600 7,632,575 12,212,120 15,265,150 24,424,240 30,530,300 61,060,600 and 122,121,200, with no remainder.

Since 122,121,200 cannot be divided by just 1 and 122,121,200, it is not a prime number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).