The numeral $11$ in base $b$ represents the number $b+1$. Therefore the fourth power of this number is $b^{4}+4b^{3}+6b^{2}+4b+1$ , where the binomial coefficients can be read from Pascal's triangle. As long as $b\geq 7$ , these coefficients are single digit numbers in base $b$ , so this is the meaning of the numeral $(14641)_{b}$. In short, the numeral formed by concatenating the symbols in the fourth row of Pascal's triangle is the answer.