Is 13118909 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 13 118 909 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 13 118 909, the only two divisors are 1 and 13 118 909. Therefore 13 118 909 is a prime number.
As a consequence, 13 118 909 is only a multiple of 1 and 13 118 909.
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Since 13118909 is a prime number, 13118909 is also a deficient number, that is to say 13118909 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 13118909 without 13118909 itself (that is 1, by definition!).