It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 121 337 is not a prime number.
For example, 121 337 can be divided by 67: 121 337 / 67 = 1 811.
For 121 337 to be a prime number, it would have been required that 121 337 has only two divisors, i.e., itself and 1.
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121 337 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 121 337 is about 348.335.
Thus, the square root of 121 337 is not an integer, and therefore 121 337 is not a square number.
The square of a number (here 121 337) is the result of the product of this number (121 337) by itself (i.e., 121 337 × 121 337); the square of 121 337 is sometimes called "raising 121 337 to the power 2", or "121 337 squared".
The square of 121 337 is 14 722 667 569 because 121 337 × 121 337 = 121 3372 = 14 722 667 569.
As a consequence, 121 337 is the square root of 14 722 667 569.
The multiples of 121 337 are all integers evenly divisible by 121 337, that is all numbers such that the remainder of the division by 121 337 is zero. There are infinitely many multiples of 121 337. The smallest multiples of 121 337 are: