It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 138 013 812 is not a prime number.
For example, 138 013 812 can be divided by 2: 138 013 812 / 2 = 69 006 906.
For 138 013 812 to be a prime number, it would have been required that 138 013 812 has only two divisors, i.e., itself and 1.
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138 013 812 is an even number, because it is evenly divisible by 2: 138 013 812 / 2 = 69 006 906.
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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 138 013 812 is about 11 747.928.
Thus, the square root of 138 013 812 is not an integer, and therefore 138 013 812 is not a square number.
The square of a number (here 138 013 812) is the result of the product of this number (138 013 812) by itself (i.e., 138 013 812 × 138 013 812); the square of 138 013 812 is sometimes called "raising 138 013 812 to the power 2", or "138 013 812 squared".
The square of 138 013 812 is 19 047 812 302 771 344 because 138 013 812 × 138 013 812 = 138 013 8122 = 19 047 812 302 771 344.
As a consequence, 138 013 812 is the square root of 19 047 812 302 771 344.
138 013 812 is a number with 9 digits.
The multiples of 138 013 812 are all integers evenly divisible by 138 013 812, that is all numbers such that the remainder of the division by 138 013 812 is zero. There are infinitely many multiples of 138 013 812. The smallest multiples of 138 013 812 are: