Is 104201987 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 104 201 987 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 104 201 987, the only two divisors are 1 and 104 201 987. Therefore 104 201 987 is a prime number.
As a consequence, 104 201 987 is only a multiple of 1 and 104 201 987.
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Since 104201987 is a prime number, 104201987 is also a deficient number, that is to say 104201987 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 104201987 without 104201987 itself (that is 1, by definition!).
