It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 38 121 is not a prime number.
For example, 38 121 can be divided by 3: 38 121 / 3 = 12 707.
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For 38 121 to be a prime number, it would have been required that 38 121 has only two divisors, i.e., itself and 1.
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38 121 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 38 121 is about 195.246.
Thus, the square root of 38 121 is not an integer, and therefore 38 121 is not a square number.
The square of a number (here 38 121) is the result of the product of this number (38 121) by itself (i.e., 38 121 × 38 121); the square of 38 121 is sometimes called "raising 38 121 to the power 2", or "38 121 squared".
The square of 38 121 is 1 453 210 641 because 38 121 × 38 121 = 38 1212 = 1 453 210 641.
As a consequence, 38 121 is the square root of 1 453 210 641.
The multiples of 38 121 are all integers evenly divisible by 38 121, that is all numbers such that the remainder of the division by 38 121 is zero. There are infinitely many multiples of 38 121. The smallest multiples of 38 121 are: