It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 130 238 is not a prime number.
For example, 130 238 can be divided by 2: 130 238 / 2 = 65 119.
For 130 238 to be a prime number, it would have been required that 130 238 has only two divisors, i.e., itself and 1.
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130 238 is an even number, because it is evenly divisible by 2: 130 238 / 2 = 65 119.
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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 130 238 is about 360.885.
Thus, the square root of 130 238 is not an integer, and therefore 130 238 is not a square number.
The square of a number (here 130 238) is the result of the product of this number (130 238) by itself (i.e., 130 238 × 130 238); the square of 130 238 is sometimes called "raising 130 238 to the power 2", or "130 238 squared".
The square of 130 238 is 16 961 936 644 because 130 238 × 130 238 = 130 2382 = 16 961 936 644.
As a consequence, 130 238 is the square root of 16 961 936 644.
The multiples of 130 238 are all integers evenly divisible by 130 238, that is all numbers such that the remainder of the division by 130 238 is zero. There are infinitely many multiples of 130 238. The smallest multiples of 130 238 are: