Is 41991731 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 41 991 731 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 41 991 731, the only two divisors are 1 and 41 991 731. Therefore 41 991 731 is a prime number.
As a consequence, 41 991 731 is only a multiple of 1 and 41 991 731.
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Since 41991731 is a prime number, 41991731 is also a deficient number, that is to say 41991731 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 41991731 without 41991731 itself (that is 1, by definition!).