You need to know the base for the modulo arithmetic.
If the base is the integer p, then 31 can be expressed as n*p + r, or r is the remainder when 31 is divided by p. r is also called the primitive root of 31 modulo p.
The primitive root of 31, by itself, has no meaning. It is only in relation to p that it has a meaning and a value.
p = 2: primitive root = 1
p = 3: primitive root = 1
p = 4: primitive root = 3
p = 5: primitive root = 1
p = 7: primitive root = 3
p = 8: primitive root = 7
etc.
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people i am stuck in the square roots. Can you help by giving me the steps.
z5 is an expression, not an equation and so cannot have roots.
31 is 6.1 x5
31 is what percent of 47?