Is 977955019 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 977 955 019 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 977 955 019, the only two divisors are 1 and 977 955 019. Therefore 977 955 019 is a prime number.
As a consequence, 977 955 019 is only a multiple of 1 and 977 955 019.
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Since 977955019 is a prime number, 977955019 is also a deficient number, that is to say 977955019 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 977955019 without 977955019 itself (that is 1, by definition!).