It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 243 738 237 is not a prime number.
For example, 243 738 237 can be divided by 3: 243 738 237 / 3 = 81 246 079.
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For 243 738 237 to be a prime number, it would have been required that 243 738 237 has only two divisors, i.e., itself and 1.
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243 738 237 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 243 738 237 is about 15 612.118.
Thus, the square root of 243 738 237 is not an integer, and therefore 243 738 237 is not a square number.
The square of a number (here 243 738 237) is the result of the product of this number (243 738 237) by itself (i.e., 243 738 237 × 243 738 237); the square of 243 738 237 is sometimes called "raising 243 738 237 to the power 2", or "243 738 237 squared".
The square of 243 738 237 is 59 408 328 175 868 168 because 243 738 237 × 243 738 237 = 243 738 2372 = 59 408 328 175 868 168.
As a consequence, 243 738 237 is the square root of 59 408 328 175 868 168.
243 738 237 is a number with 9 digits.
The multiples of 243 738 237 are all integers evenly divisible by 243 738 237, that is all numbers such that the remainder of the division by 243 738 237 is zero. There are infinitely many multiples of 243 738 237. The smallest multiples of 243 738 237 are: