It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 198 429 is not a prime number.
For example, 198 429 can be divided by 3: 198 429 / 3 = 66 143.
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For 198 429 to be a prime number, it would have been required that 198 429 has only two divisors, i.e., itself and 1.
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198 429 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 198 429 is about 445.454.
Thus, the square root of 198 429 is not an integer, and therefore 198 429 is not a square number.
The square of a number (here 198 429) is the result of the product of this number (198 429) by itself (i.e., 198 429 × 198 429); the square of 198 429 is sometimes called "raising 198 429 to the power 2", or "198 429 squared".
The square of 198 429 is 39 374 068 041 because 198 429 × 198 429 = 198 4292 = 39 374 068 041.
As a consequence, 198 429 is the square root of 39 374 068 041.
The multiples of 198 429 are all integers evenly divisible by 198 429, that is all numbers such that the remainder of the division by 198 429 is zero. There are infinitely many multiples of 198 429. The smallest multiples of 198 429 are: