It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 585 427 is not a prime number.
For example, 165 585 427 can be divided by 7: 165 585 427 / 7 = 23 655 061.
For 165 585 427 to be a prime number, it would have been required that 165 585 427 has only two divisors, i.e., itself and 1.
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165 585 427 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 165 585 427 is about 12 868.000.
Thus, the square root of 165 585 427 is not an integer, and therefore 165 585 427 is not a square number.
The square of a number (here 165 585 427) is the result of the product of this number (165 585 427) by itself (i.e., 165 585 427 × 165 585 427); the square of 165 585 427 is sometimes called "raising 165 585 427 to the power 2", or "165 585 427 squared".
The square of 165 585 427 is 27 418 533 634 772 328 because 165 585 427 × 165 585 427 = 165 585 4272 = 27 418 533 634 772 328.
As a consequence, 165 585 427 is the square root of 27 418 533 634 772 328.
165 585 427 is a number with 9 digits.
The multiples of 165 585 427 are all integers evenly divisible by 165 585 427, that is all numbers such that the remainder of the division by 165 585 427 is zero. There are infinitely many multiples of 165 585 427. The smallest multiples of 165 585 427 are: