Q: Is 74,475,200 a Prime Number?

Why is 74,475,200 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 74475200 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 50 64 80 89 100 160 178 200 320 356 400 445 523 712 800 890 1,046 1,424 1,600 1,780 2,092 2,225 2,615 2,848 3,560 4,184 4,450 5,230 5,696 7,120 8,368 8,900 10,460 13,075 14,240 16,736 17,800 20,920 26,150 28,480 33,472 35,600 41,840 46,547 52,300 71,200 83,680 93,094 104,600 142,400 167,360 186,188 209,200 232,735 372,376 418,400 465,470 744,752 836,800 930,940 1,163,675 1,489,504 1,861,880 2,327,350 2,979,008 3,723,760 4,654,700 7,447,520 9,309,400 14,895,040 18,618,800 37,237,600 and 74,475,200, with no remainder.

Since 74,475,200 cannot be divided by just 1 and 74,475,200, 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).