Is 420199237 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 420 199 237 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 420 199 237, the only two divisors are 1 and 420 199 237. Therefore 420 199 237 is a prime number.
As a consequence, 420 199 237 is only a multiple of 1 and 420 199 237.
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Since 420199237 is a prime number, 420199237 is also a deficient number, that is to say 420199237 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 420199237 without 420199237 itself (that is 1, by definition!).
