From the sum of digits method, 711 is a multiple of 9, so no it is not prime.
1, 3, 9, 79, 237, 711 3 and 79 are prime.
Because a prime number is a number that can only be divided on itself and 1, and 711 can be divided on, for instance, 3.
711 = 3 x 237 = 3 x 3 x 79 As 79 is prime, that's it and that's all!
711 is not a prime number. Other than itself and one, its positive integer factors are: 3, 9, 79, 237
It is a composite number because it has more than two factors
It is 235-711-1317
3 x 3 x 79
7+1+1 = 9 so it is divisible by 9 and so not a prime.
142 = 21 x 711
711 is a composite number. This is because composite numbers are any number that has more than two factors (one and itself). Therefore, since there are many factors of 711 besides one and itself such as 3, 9, and 79, that makes it a composite number.
137 and 127 are the only two prime numbers in the list.
51% of 711= 51% * 711= 0.51 * 711= 362.61