It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 164 324 421 is not a prime number.
For example, 164 324 421 can be divided by 3: 164 324 421 / 3 = 54 774 807.
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For 164 324 421 to be a prime number, it would have been required that 164 324 421 has only two divisors, i.e., itself and 1.
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164 324 421 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 164 324 421 is about 12 818.909.
Thus, the square root of 164 324 421 is not an integer, and therefore 164 324 421 is not a square number.
The square of a number (here 164 324 421) is the result of the product of this number (164 324 421) by itself (i.e., 164 324 421 × 164 324 421); the square of 164 324 421 is sometimes called "raising 164 324 421 to the power 2", or "164 324 421 squared".
The square of 164 324 421 is 27 002 515 336 985 240 because 164 324 421 × 164 324 421 = 164 324 4212 = 27 002 515 336 985 240.
As a consequence, 164 324 421 is the square root of 27 002 515 336 985 240.
164 324 421 is a number with 9 digits.
The multiples of 164 324 421 are all integers evenly divisible by 164 324 421, that is all numbers such that the remainder of the division by 164 324 421 is zero. There are infinitely many multiples of 164 324 421. The smallest multiples of 164 324 421 are: