It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 513 609 473 is not a prime number.
For example, 513 609 473 can be divided by 13: 513 609 473 / 13 = 39 508 421.
For 513 609 473 to be a prime number, it would have been required that 513 609 473 has only two divisors, i.e., itself and 1.
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513 609 473 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 513 609 473 is about 22 662.954.
Thus, the square root of 513 609 473 is not an integer, and therefore 513 609 473 is not a square number.
The square of a number (here 513 609 473) is the result of the product of this number (513 609 473) by itself (i.e., 513 609 473 × 513 609 473); the square of 513 609 473 is sometimes called "raising 513 609 473 to the power 2", or "513 609 473 squared".
The square of 513 609 473 is 263 794 690 755 337 728 because 513 609 473 × 513 609 473 = 513 609 4732 = 263 794 690 755 337 728.
As a consequence, 513 609 473 is the square root of 263 794 690 755 337 728.
513 609 473 is a number with 9 digits.
The multiples of 513 609 473 are all integers evenly divisible by 513 609 473, that is all numbers such that the remainder of the division by 513 609 473 is zero. There are infinitely many multiples of 513 609 473. The smallest multiples of 513 609 473 are: