It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 138 983 is not a prime number.
For example, 138 983 can be divided by 13: 138 983 / 13 = 10 691.
For 138 983 to be a prime number, it would have been required that 138 983 has only two divisors, i.e., itself and 1.
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138 983 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 138 983 is about 372.804.
Thus, the square root of 138 983 is not an integer, and therefore 138 983 is not a square number.
The square of a number (here 138 983) is the result of the product of this number (138 983) by itself (i.e., 138 983 × 138 983); the square of 138 983 is sometimes called "raising 138 983 to the power 2", or "138 983 squared".
The square of 138 983 is 19 316 274 289 because 138 983 × 138 983 = 138 9832 = 19 316 274 289.
As a consequence, 138 983 is the square root of 19 316 274 289.
The multiples of 138 983 are all integers evenly divisible by 138 983, that is all numbers such that the remainder of the division by 138 983 is zero. There are infinitely many multiples of 138 983. The smallest multiples of 138 983 are: