Q: Is 121,554,420 a Composite Number?

Why is 121,554,420 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 121,554,420 can be evenly divided by 1 2 3 4 5 6 10 12 13 15 17 20 26 30 34 39 51 52 60 65 68 78 85 89 102 103 130 156 170 178 195 204 206 221 255 260 267 309 340 356 390 412 442 445 510 515 534 618 663 780 884 890 1,020 1,030 1,068 1,105 1,157 1,236 1,326 1,335 1,339 1,513 1,545 1,751 1,780 2,060 2,210 2,314 2,652 2,670 2,678 3,026 3,090 3,315 3,471 3,502 4,017 4,420 4,539 4,628 5,253 5,340 5,356 5,785 6,052 6,180 6,630 6,695 6,942 7,004 7,565 8,034 8,755 9,078 9,167 10,506 11,570 13,260 13,390 13,884 15,130 16,068 17,355 17,510 18,156 18,334 19,669 20,085 21,012 22,695 22,763 23,140 26,265 26,780 27,501 30,260 34,710 35,020 36,668 39,338 40,170 45,390 45,526 45,835 52,530 55,002 59,007 68,289 69,420 78,676 80,340 90,780 91,052 91,670 98,345 105,060 110,004 113,815 118,014 119,171 136,578 137,505 155,839 183,340 196,690 227,630 236,028 238,342 273,156 275,010 295,035 311,678 341,445 357,513 393,380 455,260 467,517 476,684 550,020 590,070 595,855 623,356 682,890 715,026 779,195 935,034 1,180,140 1,191,710 1,365,780 1,430,052 1,558,390 1,787,565 1,870,068 2,025,907 2,337,585 2,383,420 3,116,780 3,575,130 4,051,814 4,675,170 6,077,721 7,150,260 8,103,628 9,350,340 10,129,535 12,155,442 20,259,070 24,310,884 30,388,605 40,518,140 60,777,210 and 121,554,420, with no remainder.

Since 121,554,420 cannot be divided by just 1 and 121,554,420, 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).