Q: Is 21,267,072 a Prime Number?

 A: No, 21,267,072 is not a prime number.

Why is 21,267,072 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 21267072 can be evenly divided by 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 288 384 576 1,152 18,461 36,922 55,383 73,844 110,766 147,688 166,149 221,532 295,376 332,298 443,064 590,752 664,596 886,128 1,181,504 1,329,192 1,772,256 2,363,008 2,658,384 3,544,512 5,316,768 7,089,024 10,633,536 and 21,267,072, with no remainder.

Since 21,267,072 cannot be divided by just 1 and 21,267,072, it is not a prime number.


More Examples

  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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