Is 130878089 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 130 878 089 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 130 878 089, the only two divisors are 1 and 130 878 089. Therefore 130 878 089 is a prime number.
As a consequence, 130 878 089 is only a multiple of 1 and 130 878 089.
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Since 130878089 is a prime number, 130878089 is also a deficient number, that is to say 130878089 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 130878089 without 130878089 itself (that is 1, by definition!).