It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 166 315 513 is not a prime number.
For example, 166 315 513 can be divided by 7: 166 315 513 / 7 = 23 759 359.
For 166 315 513 to be a prime number, it would have been required that 166 315 513 has only two divisors, i.e., itself and 1.
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166 315 513 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 166 315 513 is about 12 896.337.
Thus, the square root of 166 315 513 is not an integer, and therefore 166 315 513 is not a square number.
The square of a number (here 166 315 513) is the result of the product of this number (166 315 513) by itself (i.e., 166 315 513 × 166 315 513); the square of 166 315 513 is sometimes called "raising 166 315 513 to the power 2", or "166 315 513 squared".
The square of 166 315 513 is 27 660 849 864 453 168 because 166 315 513 × 166 315 513 = 166 315 5132 = 27 660 849 864 453 168.
As a consequence, 166 315 513 is the square root of 27 660 849 864 453 168.
166 315 513 is a number with 9 digits.
The multiples of 166 315 513 are all integers evenly divisible by 166 315 513, that is all numbers such that the remainder of the division by 166 315 513 is zero. There are infinitely many multiples of 166 315 513. The smallest multiples of 166 315 513 are: