It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 8 001 997 is not a prime number.
For example, 8 001 997 can be divided by 1 999: 8 001 997 / 1999 = 4 003.
For 8 001 997 to be a prime number, it would have been required that 8 001 997 has only two divisors, i.e., itself and 1.
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8 001 997 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 8 001 997 is about 2 828.780.
Thus, the square root of 8 001 997 is not an integer, and therefore 8 001 997 is not a square number.
The square of a number (here 8 001 997) is the result of the product of this number (8 001 997) by itself (i.e., 8 001 997 × 8 001 997); the square of 8 001 997 is sometimes called "raising 8 001 997 to the power 2", or "8 001 997 squared".
The square of 8 001 997 is 64 031 955 988 009 because 8 001 997 × 8 001 997 = 8 001 9972 = 64 031 955 988 009.
As a consequence, 8 001 997 is the square root of 64 031 955 988 009.
The multiples of 8 001 997 are all integers evenly divisible by 8 001 997, that is all numbers such that the remainder of the division by 8 001 997 is zero. There are infinitely many multiples of 8 001 997. The smallest multiples of 8 001 997 are: