Is 136201309 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 136 201 309 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 136 201 309, the only two divisors are 1 and 136 201 309. Therefore 136 201 309 is a prime number.
As a consequence, 136 201 309 is only a multiple of 1 and 136 201 309.
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Since 136201309 is a prime number, 136201309 is also a deficient number, that is to say 136201309 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 136201309 without 136201309 itself (that is 1, by definition!).
