To find the numerical equivalent of \( 8^1 \cdot 8^3 \), we can use the rule of exponents that states \( a^m \cdot a^n = a^{m+n} \).
In this case:
\[ 8^1 \cdot 8^3 = 8^{1+3} = 8^4 \]
Now, we can evaluate \( 8^4 \):
\[ 8^4 = (8^2)^2 = 64^2 = 4,096 \]
Therefore, the numerical equivalent of \( 8^1 \cdot 8^3 \) is \( 8^4 \) and its numerical value is \( 4,096 \).
So, the correct responses are:
8^4 and 4,096.