Q: Is 21,015,008 a Prime Number?
A: No, 21,015,008 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 21015008 can be evenly divided by 1 2 4 7 8 14 16 23 28 32 46 56 92 112 161 184 224 322 368 644 736 1,288 2,576 4,079 5,152 8,158 16,316 28,553 32,632 57,106 65,264 93,817 114,212 130,528 187,634 228,424 375,268 456,848 656,719 750,536 913,696 1,313,438 1,501,072 2,626,876 3,002,144 5,253,752 10,507,504 and 21,015,008, with no remainder.
Since 21,015,008 cannot be divided by just 1 and 21,015,008, it is not a prime number.
| Number | 21,015,006 | 21,015,007 | 21,015,009 | 21,015,010 |
| Prime? | no | no | no | no |