Is 118698409 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 118 698 409 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 118 698 409, the only two divisors are 1 and 118 698 409. Therefore 118 698 409 is a prime number.
As a consequence, 118 698 409 is only a multiple of 1 and 118 698 409.
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Since 118698409 is a prime number, 118698409 is also a deficient number, that is to say 118698409 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 118698409 without 118698409 itself (that is 1, by definition!).