Is 978058087 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 978 058 087 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 978 058 087, the only two divisors are 1 and 978 058 087. Therefore 978 058 087 is a prime number.
As a consequence, 978 058 087 is only a multiple of 1 and 978 058 087.
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Since 978058087 is a prime number, 978058087 is also a deficient number, that is to say 978058087 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 978058087 without 978058087 itself (that is 1, by definition!).