Is 559804979 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 559 804 979 is a prime number.
Indeed, the definition of a prime numbers is to have exactly two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 559 804 979, the only two divisors are 1 and 559 804 979. Therefore 559 804 979 is a prime number.
As a consequence, 559 804 979 is only a multiple of 1 and 559 804 979.
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Since 559804979 is a prime number, 559804979 is also a deficient number, that is to say 559804979 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 559804979 without 559804979 itself (that is 1, by definition!).
