Show that only itself and one divide into it. Seriously how old are you? this is easy ...
To prove that 61 is a prime number.
540 + 219 = 759 759 is evenly divisible by 3, 11, and 23, so it is not a prime number.
3208 - 3192 = 16
Because 3 is a prime number and as such its square root is irrational
57 = 3 x 19 111 = 3 x 37 Thus they are not prime numbers
534.6667
The phone number of the Gaston Branch Library is: 803-791-3208.
Unfortunately, there is no evidence of someone called "Keaghan" (or something similar) who proposed a prime number theory. I suggest you check your spelling and resubmit the question.
The phone number of the Teinert Memorial Public Library is: 254-527-3208.
Yes. To prove it, you can take the square root of 2011 (about 44.8), and divide 2011 by all the prime numbers under this number. You'll see none of them divide, so it's prime.
The phone number of the Manton Area Historical Museum is: 231-824-3208.
The phone number of the Camp Wood Public Library is: 830-597-3208.