It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 118 356 021 is not a prime number.
For example, 118 356 021 can be divided by 3: 118 356 021 / 3 = 39 452 007.
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For 118 356 021 to be a prime number, it would have been required that 118 356 021 has only two divisors, i.e., itself and 1.
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118 356 021 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 118 356 021 is about 10 879.155.
Thus, the square root of 118 356 021 is not an integer, and therefore 118 356 021 is not a square number.
The square of a number (here 118 356 021) is the result of the product of this number (118 356 021) by itself (i.e., 118 356 021 × 118 356 021); the square of 118 356 021 is sometimes called "raising 118 356 021 to the power 2", or "118 356 021 squared".
The square of 118 356 021 is 14 008 147 706 952 440 because 118 356 021 × 118 356 021 = 118 356 0212 = 14 008 147 706 952 440.
As a consequence, 118 356 021 is the square root of 14 008 147 706 952 440.
118 356 021 is a number with 9 digits.
The multiples of 118 356 021 are all integers evenly divisible by 118 356 021, that is all numbers such that the remainder of the division by 118 356 021 is zero. There are infinitely many multiples of 118 356 021. The smallest multiples of 118 356 021 are: