Q: Is 31,421,440 a Composite Number?

Why is 31,421,440 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 31,421,440 can be evenly divided by 1 2 4 5 8 10 16 17 19 20 32 34 38 40 64 68 76 80 85 95 128 136 152 160 170 190 256 272 304 320 323 340 361 380 512 544 608 640 646 680 722 760 1,024 1,088 1,216 1,280 1,292 1,360 1,444 1,520 1,615 1,805 2,176 2,432 2,560 2,584 2,720 2,888 3,040 3,230 3,610 4,352 4,864 5,120 5,168 5,440 5,776 6,080 6,137 6,460 7,220 8,704 9,728 10,336 10,880 11,552 12,160 12,274 12,920 14,440 17,408 19,456 20,672 21,760 23,104 24,320 24,548 25,840 28,880 30,685 41,344 43,520 46,208 48,640 49,096 51,680 57,760 61,370 82,688 87,040 92,416 97,280 98,192 103,360 115,520 122,740 165,376 184,832 196,384 206,720 231,040 245,480 330,752 369,664 392,768 413,440 462,080 490,960 785,536 826,880 924,160 981,920 1,571,072 1,653,760 1,848,320 1,963,840 3,142,144 3,927,680 6,284,288 7,855,360 15,710,720 and 31,421,440, with no remainder.

Since 31,421,440 cannot be divided by just 1 and 31,421,440, 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).