It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 201 443 is not a prime number.
For example, 201 443 can be divided by 11: 201 443 / 11 = 18 313.
For 201 443 to be a prime number, it would have been required that 201 443 has only two divisors, i.e., itself and 1.
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201 443 is an odd number, because it is not evenly divisible by 2.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 201 443 is about 448.824.
Thus, the square root of 201 443 is not an integer, and therefore 201 443 is not a square number.
The square of a number (here 201 443) is the result of the product of this number (201 443) by itself (i.e., 201 443 × 201 443); the square of 201 443 is sometimes called "raising 201 443 to the power 2", or "201 443 squared".
The square of 201 443 is 40 579 282 249 because 201 443 × 201 443 = 201 4432 = 40 579 282 249.
As a consequence, 201 443 is the square root of 40 579 282 249.
The multiples of 201 443 are all integers evenly divisible by 201 443, that is all numbers such that the remainder of the division by 201 443 is zero. There are infinitely many multiples of 201 443. The smallest multiples of 201 443 are: