It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 129 616 988 is not a prime number.
For example, 129 616 988 can be divided by 2: 129 616 988 / 2 = 64 808 494.
For 129 616 988 to be a prime number, it would have been required that 129 616 988 has only two divisors, i.e., itself and 1.
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129 616 988 is an even number, because it is evenly divisible by 2: 129 616 988 / 2 = 64 808 494.
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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 129 616 988 is about 11 384.946.
Thus, the square root of 129 616 988 is not an integer, and therefore 129 616 988 is not a square number.
The square of a number (here 129 616 988) is the result of the product of this number (129 616 988) by itself (i.e., 129 616 988 × 129 616 988); the square of 129 616 988 is sometimes called "raising 129 616 988 to the power 2", or "129 616 988 squared".
The square of 129 616 988 is 16 800 563 578 192 144 because 129 616 988 × 129 616 988 = 129 616 9882 = 16 800 563 578 192 144.
As a consequence, 129 616 988 is the square root of 16 800 563 578 192 144.
129 616 988 is a number with 9 digits.
The multiples of 129 616 988 are all integers evenly divisible by 129 616 988, that is all numbers such that the remainder of the division by 129 616 988 is zero. There are infinitely many multiples of 129 616 988. The smallest multiples of 129 616 988 are: