It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 491 370 998 is not a prime number.
For example, 491 370 998 can be divided by 2: 491 370 998 / 2 = 245 685 499.
For 491 370 998 to be a prime number, it would have been required that 491 370 998 has only two divisors, i.e., itself and 1.
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491 370 998 is an even number, because it is evenly divisible by 2: 491 370 998 / 2 = 245 685 499.
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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 491 370 998 is about 22 166.890.
Thus, the square root of 491 370 998 is not an integer, and therefore 491 370 998 is not a square number.
The square of a number (here 491 370 998) is the result of the product of this number (491 370 998) by itself (i.e., 491 370 998 × 491 370 998); the square of 491 370 998 is sometimes called "raising 491 370 998 to the power 2", or "491 370 998 squared".
The square of 491 370 998 is 241 445 457 675 516 000 because 491 370 998 × 491 370 998 = 491 370 9982 = 241 445 457 675 516 000.
As a consequence, 491 370 998 is the square root of 241 445 457 675 516 000.
491 370 998 is a number with 9 digits.
The multiples of 491 370 998 are all integers evenly divisible by 491 370 998, that is all numbers such that the remainder of the division by 491 370 998 is zero. There are infinitely many multiples of 491 370 998. The smallest multiples of 491 370 998 are: