Logical qubits: $\sim 4{,}000$ (for Shor's algorithm with windowed arithmetic) - Logical $T$ gates: $\sim 10^{9}$ (the dominant cost) - Logical Clifford gates: $\sim 10^{10}$ - Required logical error rate: $p_L < 10^{-15}$ (so that the total failure probability $\sim L \cdot p_L \ll 1$)