Q: Is 20,958,750 a Composite Number?

Why is 20,958,750 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 20,958,750 can be evenly divided by 1 2 3 5 6 9 10 15 18 23 25 27 30 45 46 50 54 69 75 81 90 115 125 135 138 150 162 207 225 230 243 250 270 345 375 405 414 450 486 575 621 625 675 690 729 750 810 1,035 1,125 1,150 1,215 1,242 1,250 1,350 1,458 1,725 1,863 1,875 2,025 2,070 2,250 2,430 2,875 3,105 3,375 3,450 3,645 3,726 3,750 4,050 5,175 5,589 5,625 5,750 6,075 6,210 6,750 7,290 8,625 9,315 10,125 10,350 11,178 11,250 12,150 14,375 15,525 16,767 16,875 17,250 18,225 18,630 20,250 25,875 27,945 28,750 30,375 31,050 33,534 33,750 36,450 43,125 46,575 50,625 51,750 55,890 60,750 77,625 83,835 86,250 91,125 93,150 101,250 129,375 139,725 151,875 155,250 167,670 182,250 232,875 258,750 279,450 303,750 388,125 419,175 455,625 465,750 698,625 776,250 838,350 911,250 1,164,375 1,397,250 2,095,875 2,328,750 3,493,125 4,191,750 6,986,250 10,479,375 and 20,958,750, with no remainder.

Since 20,958,750 cannot be divided by just 1 and 20,958,750, 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).