It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 361 161 is not a prime number.
For example, 361 161 can be divided by 3: 361 161 / 3 = 120 387.
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For 361 161 to be a prime number, it would have been required that 361 161 has only two divisors, i.e., itself and 1.
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361 161 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 361 161 is about 600.967.
Thus, the square root of 361 161 is not an integer, and therefore 361 161 is not a square number.
The square of a number (here 361 161) is the result of the product of this number (361 161) by itself (i.e., 361 161 × 361 161); the square of 361 161 is sometimes called "raising 361 161 to the power 2", or "361 161 squared".
The square of 361 161 is 130 437 267 921 because 361 161 × 361 161 = 361 1612 = 130 437 267 921.
As a consequence, 361 161 is the square root of 130 437 267 921.
The multiples of 361 161 are all integers evenly divisible by 361 161, that is all numbers such that the remainder of the division by 361 161 is zero. There are infinitely many multiples of 361 161. The smallest multiples of 361 161 are: