What is the remainder of \(5^{207}\) divided by 7?
The remainder is 2.
\(5^{207}\mod7\\ =(5^3)^{69}\mod 7\\ =(125)^{69}\mod 7\\ =(-1)^{69}\mod 7\\ =(-1)^{68}*-1\mod 7\\ =1*-1 \mod7\\ =-1\mod7\\ =6\mod7\)
Why does the m in mod appear faded ?
It happens in other posts as well.
