353 has primitive roots because it is a Prime number. (Not all numbers have primitive roots) It has 160 primitive roots. Generally however when we talk about THE primitive root we are talking about the lowest. So, starting at 2,3,4,5, ...... create a spreadsheet where the columns are the numbers being tested and the rows contain the powers of these numbers modulo 353 up to 176 (=352/2).
The first column not containing a 1. is the lowest primitive root.
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353% of 1,212 = 4,278.36
353 is not divisible by 9. It is only divisible by 1 and itself because 353 is a prime number.
Do the addition, get the answer and then find its square root!
What I do is find the square root of that number and then find the square root of the answer. Example: 1,296. Square root of 1,296, which can be done easily on most calculators: 36 Square root of 36: 6 Your answer is 6 If you want to check up on that, go ahead, but 6x6x6x6=1,296
To find the cube root of a number, enter the number followed by ^(1/3).To find the cube root of a number, enter the number followed by ^(1/3).To find the cube root of a number, enter the number followed by ^(1/3).To find the cube root of a number, enter the number followed by ^(1/3).