It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 130 243 is not a prime number.
For example, 130 243 can be divided by 139: 130 243 / 139 = 937.
For 130 243 to be a prime number, it would have been required that 130 243 has only two divisors, i.e., itself and 1.
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130 243 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 130 243 is about 360.892.
Thus, the square root of 130 243 is not an integer, and therefore 130 243 is not a square number.
The square of a number (here 130 243) is the result of the product of this number (130 243) by itself (i.e., 130 243 × 130 243); the square of 130 243 is sometimes called "raising 130 243 to the power 2", or "130 243 squared".
The square of 130 243 is 16 963 239 049 because 130 243 × 130 243 = 130 2432 = 16 963 239 049.
As a consequence, 130 243 is the square root of 16 963 239 049.
The multiples of 130 243 are all integers evenly divisible by 130 243, that is all numbers such that the remainder of the division by 130 243 is zero. There are infinitely many multiples of 130 243. The smallest multiples of 130 243 are: