It is divisible by 3 or 59
177/59=3
no
If it is composite, you can not make a number prime.
Since the sum if its digits (1 + 7 + 7 = 15) is divisible by 3, the original number 177 is divisible by 3.Now we know that it has at least one factor in addition to '1' and itself, so it's not prime.
531 is not a prime number. Other than itself and one, it is also divisible by 3, 9, 59, and 177.
no
177 = 180 - 3 and 3 goes into 180 so not a prime (59 x 3 = 177)
As a product of its prime factors: 3*59 = 177
It is: 3 times 59 = 177
Because it has more than two factors
1,31, 15.5, 2, 7.75, 4 ..... but there are only two factors: 1 and 31 making it a prime number 177
177, using the '3' divisibility rule, 7 + 7 + 1 = 15, where 15 mod 3 = 0. Thus, 177 is divisible by 3. 177/3 = 59. 59 is a prime, thus the factors of 177 is:{1, 3, 59, 177}, the only ones that properly divide 177.
113 + 64 = 177