It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 80 138 308 is not a prime number.
For example, 80 138 308 can be divided by 2: 80 138 308 / 2 = 40 069 154.
For 80 138 308 to be a prime number, it would have been required that 80 138 308 has only two divisors, i.e., itself and 1.
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80 138 308 is an even number, because it is evenly divisible by 2: 80 138 308 / 2 = 40 069 154.
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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 80 138 308 is about 8 952.000.
Thus, the square root of 80 138 308 is not an integer, and therefore 80 138 308 is not a square number.
The square of a number (here 80 138 308) is the result of the product of this number (80 138 308) by itself (i.e., 80 138 308 × 80 138 308); the square of 80 138 308 is sometimes called "raising 80 138 308 to the power 2", or "80 138 308 squared".
The square of 80 138 308 is 6 422 148 409 102 864 because 80 138 308 × 80 138 308 = 80 138 3082 = 6 422 148 409 102 864.
As a consequence, 80 138 308 is the square root of 6 422 148 409 102 864.
80 138 308 is a number with 8 digits.
The multiples of 80 138 308 are all integers evenly divisible by 80 138 308, that is all numbers such that the remainder of the division by 80 138 308 is zero. There are infinitely many multiples of 80 138 308. The smallest multiples of 80 138 308 are: