It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 774 502 012 is not a prime number.
For example, 774 502 012 can be divided by 2: 774 502 012 / 2 = 387 251 006.
For 774 502 012 to be a prime number, it would have been required that 774 502 012 has only two divisors, i.e., itself and 1.
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774 502 012 is an even number, because it is evenly divisible by 2: 774 502 012 / 2 = 387 251 006.
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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 774 502 012 is about 27 829.876.
Thus, the square root of 774 502 012 is not an integer, and therefore 774 502 012 is not a square number.
The square of a number (here 774 502 012) is the result of the product of this number (774 502 012) by itself (i.e., 774 502 012 × 774 502 012); the square of 774 502 012 is sometimes called "raising 774 502 012 to the power 2", or "774 502 012 squared".
The square of 774 502 012 is 599 853 366 592 048 128 because 774 502 012 × 774 502 012 = 774 502 0122 = 599 853 366 592 048 128.
As a consequence, 774 502 012 is the square root of 599 853 366 592 048 128.
774 502 012 is a number with 9 digits.
The multiples of 774 502 012 are all integers evenly divisible by 774 502 012, that is all numbers such that the remainder of the division by 774 502 012 is zero. There are infinitely many multiples of 774 502 012. The smallest multiples of 774 502 012 are: