It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 187 988 is not a prime number.
For example, 187 988 can be divided by 2: 187 988 / 2 = 93 994.
For 187 988 to be a prime number, it would have been required that 187 988 has only two divisors, i.e., itself and 1.
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187 988 is an even number, because it is evenly divisible by 2: 187 988 / 2 = 93 994.
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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 187 988 is about 433.576.
Thus, the square root of 187 988 is not an integer, and therefore 187 988 is not a square number.
The square of a number (here 187 988) is the result of the product of this number (187 988) by itself (i.e., 187 988 × 187 988); the square of 187 988 is sometimes called "raising 187 988 to the power 2", or "187 988 squared".
The square of 187 988 is 35 339 488 144 because 187 988 × 187 988 = 187 9882 = 35 339 488 144.
As a consequence, 187 988 is the square root of 35 339 488 144.
The multiples of 187 988 are all integers evenly divisible by 187 988, that is all numbers such that the remainder of the division by 187 988 is zero. There are infinitely many multiples of 187 988. The smallest multiples of 187 988 are: