It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 243 131 is not a prime number.
For example, 243 131 can be divided by 7: 243 131 / 7 = 34 733.
For 243 131 to be a prime number, it would have been required that 243 131 has only two divisors, i.e., itself and 1.
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243 131 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 243 131 is about 493.083.
Thus, the square root of 243 131 is not an integer, and therefore 243 131 is not a square number.
The square of a number (here 243 131) is the result of the product of this number (243 131) by itself (i.e., 243 131 × 243 131); the square of 243 131 is sometimes called "raising 243 131 to the power 2", or "243 131 squared".
The square of 243 131 is 59 112 683 161 because 243 131 × 243 131 = 243 1312 = 59 112 683 161.
As a consequence, 243 131 is the square root of 59 112 683 161.
The multiples of 243 131 are all integers evenly divisible by 243 131, that is all numbers such that the remainder of the division by 243 131 is zero. There are infinitely many multiples of 243 131. The smallest multiples of 243 131 are: