Is 108987839 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 108 987 839 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 108 987 839, the only two divisors are 1 and 108 987 839. Therefore 108 987 839 is a prime number.
As a consequence, 108 987 839 is only a multiple of 1 and 108 987 839.
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Since 108987839 is a prime number, 108987839 is also a deficient number, that is to say 108987839 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 108987839 without 108987839 itself (that is 1, by definition!).