It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 138 013 511 is not a prime number.
For example, 138 013 511 can be divided by 19: 138 013 511 / 19 = 7 263 869.
For 138 013 511 to be a prime number, it would have been required that 138 013 511 has only two divisors, i.e., itself and 1.
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138 013 511 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 138 013 511 is about 11 747.915.
Thus, the square root of 138 013 511 is not an integer, and therefore 138 013 511 is not a square number.
The square of a number (here 138 013 511) is the result of the product of this number (138 013 511) by itself (i.e., 138 013 511 × 138 013 511); the square of 138 013 511 is sometimes called "raising 138 013 511 to the power 2", or "138 013 511 squared".
The square of 138 013 511 is 19 047 729 218 547 120 because 138 013 511 × 138 013 511 = 138 013 5112 = 19 047 729 218 547 120.
As a consequence, 138 013 511 is the square root of 19 047 729 218 547 120.
138 013 511 is a number with 9 digits.
The multiples of 138 013 511 are all integers evenly divisible by 138 013 511, that is all numbers such that the remainder of the division by 138 013 511 is zero. There are infinitely many multiples of 138 013 511. The smallest multiples of 138 013 511 are: