It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 137 726 is not a prime number.
For example, 988 137 726 can be divided by 2: 988 137 726 / 2 = 494 068 863.
For 988 137 726 to be a prime number, it would have been required that 988 137 726 has only two divisors, i.e., itself and 1.
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988 137 726 is an even number, because it is evenly divisible by 2: 988 137 726 / 2 = 494 068 863.
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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 988 137 726 is about 31 434.658.
Thus, the square root of 988 137 726 is not an integer, and therefore 988 137 726 is not a square number.
The square of a number (here 988 137 726) is the result of the product of this number (988 137 726) by itself (i.e., 988 137 726 × 988 137 726); the square of 988 137 726 is sometimes called "raising 988 137 726 to the power 2", or "988 137 726 squared".
The square of 988 137 726 is 976 416 165 544 451 072 because 988 137 726 × 988 137 726 = 988 137 7262 = 976 416 165 544 451 072.
As a consequence, 988 137 726 is the square root of 976 416 165 544 451 072.
988 137 726 is a number with 9 digits.
The multiples of 988 137 726 are all integers evenly divisible by 988 137 726, that is all numbers such that the remainder of the division by 988 137 726 is zero. There are infinitely many multiples of 988 137 726. The smallest multiples of 988 137 726 are: