Is 13142743 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 13 142 743 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 13 142 743, the only two divisors are 1 and 13 142 743. Therefore 13 142 743 is a prime number.
As a consequence, 13 142 743 is only a multiple of 1 and 13 142 743.
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Since 13142743 is a prime number, 13142743 is also a deficient number, that is to say 13142743 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 13142743 without 13142743 itself (that is 1, by definition!).