It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 201 109 is not a prime number.
For example, 201 109 can be divided by 83: 201 109 / 83 = 2 423.
For 201 109 to be a prime number, it would have been required that 201 109 has only two divisors, i.e., itself and 1.
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201 109 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 201 109 is about 448.452.
Thus, the square root of 201 109 is not an integer, and therefore 201 109 is not a square number.
The square of a number (here 201 109) is the result of the product of this number (201 109) by itself (i.e., 201 109 × 201 109); the square of 201 109 is sometimes called "raising 201 109 to the power 2", or "201 109 squared".
The square of 201 109 is 40 444 829 881 because 201 109 × 201 109 = 201 1092 = 40 444 829 881.
As a consequence, 201 109 is the square root of 40 444 829 881.
The multiples of 201 109 are all integers evenly divisible by 201 109, that is all numbers such that the remainder of the division by 201 109 is zero. There are infinitely many multiples of 201 109. The smallest multiples of 201 109 are: