It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 198 167 is not a prime number.
For example, 198 167 can be divided by 53: 198 167 / 53 = 3 739.
For 198 167 to be a prime number, it would have been required that 198 167 has only two divisors, i.e., itself and 1.
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198 167 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 198 167 is about 445.160.
Thus, the square root of 198 167 is not an integer, and therefore 198 167 is not a square number.
The square of a number (here 198 167) is the result of the product of this number (198 167) by itself (i.e., 198 167 × 198 167); the square of 198 167 is sometimes called "raising 198 167 to the power 2", or "198 167 squared".
The square of 198 167 is 39 270 159 889 because 198 167 × 198 167 = 198 1672 = 39 270 159 889.
As a consequence, 198 167 is the square root of 39 270 159 889.
The multiples of 198 167 are all integers evenly divisible by 198 167, that is all numbers such that the remainder of the division by 198 167 is zero. There are infinitely many multiples of 198 167. The smallest multiples of 198 167 are: