It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 125 169 is not a prime number.
For example, 125 169 can be divided by 3: 125 169 / 3 = 41 723.
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For 125 169 to be a prime number, it would have been required that 125 169 has only two divisors, i.e., itself and 1.
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125 169 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 125 169 is about 353.792.
Thus, the square root of 125 169 is not an integer, and therefore 125 169 is not a square number.
The square of a number (here 125 169) is the result of the product of this number (125 169) by itself (i.e., 125 169 × 125 169); the square of 125 169 is sometimes called "raising 125 169 to the power 2", or "125 169 squared".
The square of 125 169 is 15 667 278 561 because 125 169 × 125 169 = 125 1692 = 15 667 278 561.
As a consequence, 125 169 is the square root of 15 667 278 561.
The multiples of 125 169 are all integers evenly divisible by 125 169, that is all numbers such that the remainder of the division by 125 169 is zero. There are infinitely many multiples of 125 169. The smallest multiples of 125 169 are: