Is 121837201 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 121 837 201 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 121 837 201, the only two divisors are 1 and 121 837 201. Therefore 121 837 201 is a prime number.
As a consequence, 121 837 201 is only a multiple of 1 and 121 837 201.
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Since 121837201 is a prime number, 121837201 is also a deficient number, that is to say 121837201 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 121837201 without 121837201 itself (that is 1, by definition!).
