Q: Is 121,220,200 a Prime Number?

Why is 121,220,200 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 121220200 can be evenly divided by 1 2 4 5 8 10 17 20 25 34 40 50 68 85 100 101 136 170 200 202 340 353 404 425 505 680 706 808 850 1,010 1,412 1,700 1,717 1,765 2,020 2,525 2,824 3,400 3,434 3,530 4,040 5,050 6,001 6,868 7,060 8,585 8,825 10,100 12,002 13,736 14,120 17,170 17,650 20,200 24,004 30,005 34,340 35,300 35,653 42,925 48,008 60,010 68,680 70,600 71,306 85,850 120,020 142,612 150,025 171,700 178,265 240,040 285,224 300,050 343,400 356,530 600,100 606,101 713,060 891,325 1,200,200 1,212,202 1,426,120 1,782,650 2,424,404 3,030,505 3,565,300 4,848,808 6,061,010 7,130,600 12,122,020 15,152,525 24,244,040 30,305,050 60,610,100 and 121,220,200, with no remainder.

Since 121,220,200 cannot be divided by just 1 and 121,220,200, 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).