It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 166 343 is not a prime number.
For example, 166 343 can be divided by 397: 166 343 / 397 = 419.
For 166 343 to be a prime number, it would have been required that 166 343 has only two divisors, i.e., itself and 1.
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166 343 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 166 343 is about 407.852.
Thus, the square root of 166 343 is not an integer, and therefore 166 343 is not a square number.
The square of a number (here 166 343) is the result of the product of this number (166 343) by itself (i.e., 166 343 × 166 343); the square of 166 343 is sometimes called "raising 166 343 to the power 2", or "166 343 squared".
The square of 166 343 is 27 669 993 649 because 166 343 × 166 343 = 166 3432 = 27 669 993 649.
As a consequence, 166 343 is the square root of 27 669 993 649.
The multiples of 166 343 are all integers evenly divisible by 166 343, that is all numbers such that the remainder of the division by 166 343 is zero. There are infinitely many multiples of 166 343. The smallest multiples of 166 343 are: