Is 429927259 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 429 927 259 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 429 927 259, the only two divisors are 1 and 429 927 259. Therefore 429 927 259 is a prime number.
As a consequence, 429 927 259 is only a multiple of 1 and 429 927 259.
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Since 429927259 is a prime number, 429927259 is also a deficient number, that is to say 429927259 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 429927259 without 429927259 itself (that is 1, by definition!).