Is 189420163 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 189 420 163 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 189 420 163, the only two divisors are 1 and 189 420 163. Therefore 189 420 163 is a prime number.
As a consequence, 189 420 163 is only a multiple of 1 and 189 420 163.
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Since 189420163 is a prime number, 189420163 is also a deficient number, that is to say 189420163 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 189420163 without 189420163 itself (that is 1, by definition!).
