Q: Is 100,121,200 a Prime Number?

Why is 100,121,200 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 100121200 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 43 50 80 86 100 172 200 215 344 400 430 688 860 1,075 1,720 2,150 3,440 4,300 5,821 8,600 11,642 17,200 23,284 29,105 46,568 58,210 93,136 116,420 145,525 232,840 250,303 291,050 465,680 500,606 582,100 1,001,212 1,164,200 1,251,515 2,002,424 2,328,400 2,503,030 4,004,848 5,006,060 6,257,575 10,012,120 12,515,150 20,024,240 25,030,300 50,060,600 and 100,121,200, with no remainder.

Since 100,121,200 cannot be divided by just 1 and 100,121,200, 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).