Is 72165029 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 72 165 029 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 72 165 029, the only two divisors are 1 and 72 165 029. Therefore 72 165 029 is a prime number.
As a consequence, 72 165 029 is only a multiple of 1 and 72 165 029.
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Since 72165029 is a prime number, 72165029 is also a deficient number, that is to say 72165029 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 72165029 without 72165029 itself (that is 1, by definition!).