Is 102921031 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 102 921 031 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 102 921 031, the only two divisors are 1 and 102 921 031. Therefore 102 921 031 is a prime number.
As a consequence, 102 921 031 is only a multiple of 1 and 102 921 031.
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Since 102921031 is a prime number, 102921031 is also a deficient number, that is to say 102921031 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 102921031 without 102921031 itself (that is 1, by definition!).