Is 43135429 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 43 135 429 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 43 135 429, the only two divisors are 1 and 43 135 429. Therefore 43 135 429 is a prime number.
As a consequence, 43 135 429 is only a multiple of 1 and 43 135 429.
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Since 43135429 is a prime number, 43135429 is also a deficient number, that is to say 43135429 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 43135429 without 43135429 itself (that is 1, by definition!).