It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 742 726 008 is not a prime number.
For example, 742 726 008 can be divided by 2: 742 726 008 / 2 = 371 363 004.
For 742 726 008 to be a prime number, it would have been required that 742 726 008 has only two divisors, i.e., itself and 1.
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742 726 008 is an even number, because it is evenly divisible by 2: 742 726 008 / 2 = 371 363 004.
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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 742 726 008 is about 27 253.000.
Thus, the square root of 742 726 008 is not an integer, and therefore 742 726 008 is not a square number.
The square of a number (here 742 726 008) is the result of the product of this number (742 726 008) by itself (i.e., 742 726 008 × 742 726 008); the square of 742 726 008 is sometimes called "raising 742 726 008 to the power 2", or "742 726 008 squared".
The square of 742 726 008 is 551 641 922 959 616 064 because 742 726 008 × 742 726 008 = 742 726 0082 = 551 641 922 959 616 064.
As a consequence, 742 726 008 is the square root of 551 641 922 959 616 064.
742 726 008 is a number with 9 digits.
The multiples of 742 726 008 are all integers evenly divisible by 742 726 008, that is all numbers such that the remainder of the division by 742 726 008 is zero. There are infinitely many multiples of 742 726 008. The smallest multiples of 742 726 008 are: