It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 238 509 916 is not a prime number.
For example, 238 509 916 can be divided by 2: 238 509 916 / 2 = 119 254 958.
For 238 509 916 to be a prime number, it would have been required that 238 509 916 has only two divisors, i.e., itself and 1.
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238 509 916 is an even number, because it is evenly divisible by 2: 238 509 916 / 2 = 119 254 958.
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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 238 509 916 is about 15 443.766.
Thus, the square root of 238 509 916 is not an integer, and therefore 238 509 916 is not a square number.
The square of a number (here 238 509 916) is the result of the product of this number (238 509 916) by itself (i.e., 238 509 916 × 238 509 916); the square of 238 509 916 is sometimes called "raising 238 509 916 to the power 2", or "238 509 916 squared".
The square of 238 509 916 is 56 886 980 030 327 056 because 238 509 916 × 238 509 916 = 238 509 9162 = 56 886 980 030 327 056.
As a consequence, 238 509 916 is the square root of 56 886 980 030 327 056.
238 509 916 is a number with 9 digits.
The multiples of 238 509 916 are all integers evenly divisible by 238 509 916, that is all numbers such that the remainder of the division by 238 509 916 is zero. There are infinitely many multiples of 238 509 916. The smallest multiples of 238 509 916 are: