Q: Is 999,840 a Prime Number?

 A: No, 999,840 is not a prime number.

Why is 999,840 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 999840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 2,083 4,166 6,249 8,332 10,415 12,498 16,664 20,830 24,996 31,245 33,328 41,660 49,992 62,490 66,656 83,320 99,984 124,980 166,640 199,968 249,960 333,280 499,920 and 999,840, with no remainder.

Since 999,840 cannot be divided by just 1 and 999,840, it is not a prime number.


More Examples

Number 999,838999,839999,841999,842
Prime? nononono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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