It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 145 201 is not a prime number.
For example, 145 201 can be divided by 7: 145 201 / 7 = 20 743.
For 145 201 to be a prime number, it would have been required that 145 201 has only two divisors, i.e., itself and 1.
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145 201 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 145 201 is about 381.052.
Thus, the square root of 145 201 is not an integer, and therefore 145 201 is not a square number.
The square of a number (here 145 201) is the result of the product of this number (145 201) by itself (i.e., 145 201 × 145 201); the square of 145 201 is sometimes called "raising 145 201 to the power 2", or "145 201 squared".
The square of 145 201 is 21 083 330 401 because 145 201 × 145 201 = 145 2012 = 21 083 330 401.
As a consequence, 145 201 is the square root of 21 083 330 401.
The multiples of 145 201 are all integers evenly divisible by 145 201, that is all numbers such that the remainder of the division by 145 201 is zero. There are infinitely many multiples of 145 201. The smallest multiples of 145 201 are: