Q: Is 212,142,021 a Prime Number?

 A: No, 212,142,021 is not a prime number.

Why is 212,142,021 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 212142021 can be evenly divided by 1 3 7 13 21 31 39 49 91 93 147 217 273 403 637 651 1,209 1,519 1,911 2,821 3,581 4,557 8,463 10,743 19,747 25,067 46,553 59,241 75,201 111,011 139,659 175,469 325,871 333,033 526,407 777,077 977,613 1,443,143 2,281,097 2,331,231 4,329,429 5,439,539 6,843,291 10,102,001 16,318,617 30,306,003 70,714,007 and 212,142,021, with no remainder.

Since 212,142,021 cannot be divided by just 1 and 212,142,021, 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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