Q: Is 21,123,120 a Prime Number?
A: No, 21,123,120 is 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 21123120 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 283 311 566 622 849 933 1,132 1,244 1,415 1,555 1,698 1,866 2,264 2,488 2,830 3,110 3,396 3,732 4,245 4,528 4,665 4,976 5,660 6,220 6,792 7,464 8,490 9,330 11,320 12,440 13,584 14,928 16,980 18,660 22,640 24,880 33,960 37,320 67,920 74,640 88,013 176,026 264,039 352,052 440,065 528,078 704,104 880,130 1,056,156 1,320,195 1,408,208 1,760,260 2,112,312 2,640,390 3,520,520 4,224,624 5,280,780 7,041,040 10,561,560 and 21,123,120, with no remainder.
Since 21,123,120 cannot be divided by just 1 and 21,123,120, it is not a prime number.
| Number | 21,123,118 | 21,123,119 | 21,123,121 | 21,123,122 |
| Prime? | no | yes | no | no |