Represent 12345 (base 10) in the following bases and identify the number of digits. Note: write A, B, C, D, E, F for 10, 11, 12, 13, 14, 15 respectively. Base 2 has digits Base 3 has digits Base 4 has digits Base 5 has digits Base 6 has digits Base 7 has digits Base 8 has digits Base 9 has digits Base 11 has digits Base 12 has digits Base 13 has digits Base 14 has digits Base 15 has digits Base 16 has digits