It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 616 131 is not a prime number.
For example, 165 616 131 can be divided by 3: 165 616 131 / 3 = 55 205 377.
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For 165 616 131 to be a prime number, it would have been required that 165 616 131 has only two divisors, i.e., itself and 1.
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165 616 131 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 165 616 131 is about 12 869.193.
Thus, the square root of 165 616 131 is not an integer, and therefore 165 616 131 is not a square number.
The square of a number (here 165 616 131) is the result of the product of this number (165 616 131) by itself (i.e., 165 616 131 × 165 616 131); the square of 165 616 131 is sometimes called "raising 165 616 131 to the power 2", or "165 616 131 squared".
The square of 165 616 131 is 27 428 702 847 409 160 because 165 616 131 × 165 616 131 = 165 616 1312 = 27 428 702 847 409 160.
As a consequence, 165 616 131 is the square root of 27 428 702 847 409 160.
165 616 131 is a number with 9 digits.
The multiples of 165 616 131 are all integers evenly divisible by 165 616 131, that is all numbers such that the remainder of the division by 165 616 131 is zero. There are infinitely many multiples of 165 616 131. The smallest multiples of 165 616 131 are: