It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 18 983 is not a prime number.
For example, 18 983 can be divided by 41: 18 983 / 41 = 463.
For 18 983 to be a prime number, it would have been required that 18 983 has only two divisors, i.e., itself and 1.
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18 983 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 18 983 is about 137.779.
Thus, the square root of 18 983 is not an integer, and therefore 18 983 is not a square number.
The square of a number (here 18 983) is the result of the product of this number (18 983) by itself (i.e., 18 983 × 18 983); the square of 18 983 is sometimes called "raising 18 983 to the power 2", or "18 983 squared".
The square of 18 983 is 360 354 289 because 18 983 × 18 983 = 18 9832 = 360 354 289.
As a consequence, 18 983 is the square root of 360 354 289.
The multiples of 18 983 are all integers evenly divisible by 18 983, that is all numbers such that the remainder of the division by 18 983 is zero. There are infinitely many multiples of 18 983. The smallest multiples of 18 983 are: