Is 751 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
For 751, the answer is: yes, 751 is a prime number because it has only two distinct divisors: 1 and itself (751).
As a consequence, 751 is only a multiple of 1 and 751.
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Since 751 is a prime number, 751 is also a deficient number, that is to say 751 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 751 without 751 itself (that is 1, by definition!).