It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 725 138 is not a prime number.
For example, 988 725 138 can be divided by 2: 988 725 138 / 2 = 494 362 569.
For 988 725 138 to be a prime number, it would have been required that 988 725 138 has only two divisors, i.e., itself and 1.
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988 725 138 is an even number, because it is evenly divisible by 2: 988 725 138 / 2 = 494 362 569.
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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 988 725 138 is about 31 444.000.
Thus, the square root of 988 725 138 is not an integer, and therefore 988 725 138 is not a square number.
The square of a number (here 988 725 138) is the result of the product of this number (988 725 138) by itself (i.e., 988 725 138 × 988 725 138); the square of 988 725 138 is sometimes called "raising 988 725 138 to the power 2", or "988 725 138 squared".
The square of 988 725 138 is 977 577 398 513 119 104 because 988 725 138 × 988 725 138 = 988 725 1382 = 977 577 398 513 119 104.
As a consequence, 988 725 138 is the square root of 977 577 398 513 119 104.
988 725 138 is a number with 9 digits.
The multiples of 988 725 138 are all integers evenly divisible by 988 725 138, that is all numbers such that the remainder of the division by 988 725 138 is zero. There are infinitely many multiples of 988 725 138. The smallest multiples of 988 725 138 are: