I am trying to convert a hex line to binary in BASH, but my output includes a backslash when I do this. Can someone explain this to me?

Specifics:

Input:

for i in 3D3D516343746D4D6D6C315669563362; do BIN=$(echo "ibase=16; obase=2; $i" | bc); echo $BIN; done

Output:

11110100111101010100010110001101000011011101000110110101001101011011\ 0101101100001100010101011001101001010101100011001101100010

I am trying to convert a hex line to binary in bash, but the output includes a backslash. Can someone explain why?

Input:

for i in 3D3D516343746D4D6D6C315669563362; do BIN=$(echo "ibase=16; obase=2; $i" | bc); echo $BIN; done

Output:

11110100111101010100010110001101000011011101000110110101001101011011\ 0101101100001100010101011001101001010101100011001101100010