It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 106 521 is not a prime number.
For example, 106 521 can be divided by 3: 106 521 / 3 = 35 507.
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For 106 521 to be a prime number, it would have been required that 106 521 has only two divisors, i.e., itself and 1.
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106 521 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 106 521 is about 326.376.
Thus, the square root of 106 521 is not an integer, and therefore 106 521 is not a square number.
The square of a number (here 106 521) is the result of the product of this number (106 521) by itself (i.e., 106 521 × 106 521); the square of 106 521 is sometimes called "raising 106 521 to the power 2", or "106 521 squared".
The square of 106 521 is 11 346 723 441 because 106 521 × 106 521 = 106 5212 = 11 346 723 441.
As a consequence, 106 521 is the square root of 11 346 723 441.
The multiples of 106 521 are all integers evenly divisible by 106 521, that is all numbers such that the remainder of the division by 106 521 is zero. There are infinitely many multiples of 106 521. The smallest multiples of 106 521 are: