3. Mr. Lawson chose a mystery number and wrote its prime factorization as $2^{a} \cdot 3^{b} \cdot 5^{c}$ where $a, b$, and $c$ are all different natural numbers with $a>b>c$. Mr. Reisner chose a different number and wrote its prime factorization as $2^{b} \cdot 3^{c} \cdot 5^{a}$ using the same rules for $a, b$ and $c$. Mr. Cathcart is curious about the greatest common factor and the lowest common multiple of these two values. Explain one of these values to him.