Is 77359409 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 77 359 409 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 77 359 409, the only two divisors are 1 and 77 359 409. Therefore 77 359 409 is a prime number.
As a consequence, 77 359 409 is only a multiple of 1 and 77 359 409.
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Since 77359409 is a prime number, 77359409 is also a deficient number, that is to say 77359409 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 77359409 without 77359409 itself (that is 1, by definition!).