It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 138 149 is not a prime number.
For example, 138 149 can be divided by 11: 138 149 / 11 = 12 559.
For 138 149 to be a prime number, it would have been required that 138 149 has only two divisors, i.e., itself and 1.
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138 149 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 138 149 is about 371.684.
Thus, the square root of 138 149 is not an integer, and therefore 138 149 is not a square number.
The square of a number (here 138 149) is the result of the product of this number (138 149) by itself (i.e., 138 149 × 138 149); the square of 138 149 is sometimes called "raising 138 149 to the power 2", or "138 149 squared".
The square of 138 149 is 19 085 146 201 because 138 149 × 138 149 = 138 1492 = 19 085 146 201.
As a consequence, 138 149 is the square root of 19 085 146 201.
The multiples of 138 149 are all integers evenly divisible by 138 149, that is all numbers such that the remainder of the division by 138 149 is zero. There are infinitely many multiples of 138 149. The smallest multiples of 138 149 are: