Is 438672203 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 438 672 203 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 438 672 203, the only two divisors are 1 and 438 672 203. Therefore 438 672 203 is a prime number.
As a consequence, 438 672 203 is only a multiple of 1 and 438 672 203.
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Since 438672203 is a prime number, 438672203 is also a deficient number, that is to say 438672203 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 438672203 without 438672203 itself (that is 1, by definition!).