Is 163521427 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 163 521 427 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 163 521 427, the only two divisors are 1 and 163 521 427. Therefore 163 521 427 is a prime number.
As a consequence, 163 521 427 is only a multiple of 1 and 163 521 427.
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Since 163521427 is a prime number, 163521427 is also a deficient number, that is to say 163521427 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 163521427 without 163521427 itself (that is 1, by definition!).
