It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 73 009 509 is not a prime number.
For example, 73 009 509 can be divided by 3: 73 009 509 / 3 = 24 336 503.
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For 73 009 509 to be a prime number, it would have been required that 73 009 509 has only two divisors, i.e., itself and 1.
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73 009 509 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 73 009 509 is about 8 544.560.
Thus, the square root of 73 009 509 is not an integer, and therefore 73 009 509 is not a square number.
The square of a number (here 73 009 509) is the result of the product of this number (73 009 509) by itself (i.e., 73 009 509 × 73 009 509); the square of 73 009 509 is sometimes called "raising 73 009 509 to the power 2", or "73 009 509 squared".
The square of 73 009 509 is 5 330 388 404 421 081 because 73 009 509 × 73 009 509 = 73 009 5092 = 5 330 388 404 421 081.
As a consequence, 73 009 509 is the square root of 5 330 388 404 421 081.
73 009 509 is a number with 8 digits.
The multiples of 73 009 509 are all integers evenly divisible by 73 009 509, that is all numbers such that the remainder of the division by 73 009 509 is zero. There are infinitely many multiples of 73 009 509. The smallest multiples of 73 009 509 are: