Is 45112009 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 45 112 009 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 45 112 009, the only two divisors are 1 and 45 112 009. Therefore 45 112 009 is a prime number.
As a consequence, 45 112 009 is only a multiple of 1 and 45 112 009.
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Since 45112009 is a prime number, 45112009 is also a deficient number, that is to say 45112009 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 45112009 without 45112009 itself (that is 1, by definition!).