Ah, what a happy little challenge! To get the number 13 using only the digits 1, 2, 3, and 4, you can add 1, 2, 3, and 4 together. That would give you 10, then you can add 3 to that to get 13. Just remember, there are no mistakes, only happy accidents in math!
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Only 1 and 13 because it is a prime number
Since 13 is a prime number (i.e., 13 is the only factor of 13), any number that is not a multiple of 13 is relatively prime to it.
13 is a prime number13 is a prime number, because there are no two numbers that multiply to get 13.It is a prime number because no number can go into it or be multiplied and the answer be 13.Only two numbers go into 13.The two numbers:1;13One and thirteen (itself)1 is neither prime or composite.So concluding, 13 is a prime number.
13 is a prime number, which means the only multiple of the number is 1.
169 is not a prime number. it can be divided by 13. 169 / 13 = 13. so actually 13 would be the square root of 169.No, it is 13 x 13