[tex]70000 \div 2= \\
35000 \div 2 = \\
17500 \div 2= \\
8750 \div 2= \\
4375 \div 5= \\
875 \div 5= \\
175 \div 5= \\
35 \div 5 = \\
7 \\ \\
70000=2 \times 2 \times 2 \times 2 \times 5 \times 5 \times 5 \times 5 \times 7=\boxed{2^4 \times 5^4 \times 7}[/tex]
