It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 800 241 is not a prime number.
For example, 800 241 can be divided by 3: 800 241 / 3 = 266 747.
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For 800 241 to be a prime number, it would have been required that 800 241 has only two divisors, i.e., itself and 1.
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800 241 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 800 241 is about 894.562.
Thus, the square root of 800 241 is not an integer, and therefore 800 241 is not a square number.
The square of a number (here 800 241) is the result of the product of this number (800 241) by itself (i.e., 800 241 × 800 241); the square of 800 241 is sometimes called "raising 800 241 to the power 2", or "800 241 squared".
The square of 800 241 is 640 385 658 081 because 800 241 × 800 241 = 800 2412 = 640 385 658 081.
As a consequence, 800 241 is the square root of 640 385 658 081.
The multiples of 800 241 are all integers evenly divisible by 800 241, that is all numbers such that the remainder of the division by 800 241 is zero. There are infinitely many multiples of 800 241. The smallest multiples of 800 241 are: