Is 109018387 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 109 018 387 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 109 018 387, the only two divisors are 1 and 109 018 387. Therefore 109 018 387 is a prime number.
As a consequence, 109 018 387 is only a multiple of 1 and 109 018 387.
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Since 109018387 is a prime number, 109018387 is also a deficient number, that is to say 109018387 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 109018387 without 109018387 itself (that is 1, by definition!).