It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 343 988 is not a prime number.
For example, 343 988 can be divided by 2: 343 988 / 2 = 171 994.
For 343 988 to be a prime number, it would have been required that 343 988 has only two divisors, i.e., itself and 1.
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343 988 is an even number, because it is evenly divisible by 2: 343 988 / 2 = 171 994.
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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 343 988 is about 586.505.
Thus, the square root of 343 988 is not an integer, and therefore 343 988 is not a square number.
The square of a number (here 343 988) is the result of the product of this number (343 988) by itself (i.e., 343 988 × 343 988); the square of 343 988 is sometimes called "raising 343 988 to the power 2", or "343 988 squared".
The square of 343 988 is 118 327 744 144 because 343 988 × 343 988 = 343 9882 = 118 327 744 144.
As a consequence, 343 988 is the square root of 118 327 744 144.
The multiples of 343 988 are all integers evenly divisible by 343 988, that is all numbers such that the remainder of the division by 343 988 is zero. There are infinitely many multiples of 343 988. The smallest multiples of 343 988 are: