Two Qiskit projects covering core quantum computing topics:

1. Beauregard's Shor Circuit — Implements the quantum subroutine behind Shor's factoring algorithm using only 2n+3 qubits by performing arithmetic in the frequency domain. Includes a layered oracle, test suite, and end-to-end factoring demo via quantum phase estimation.
Code available here: https://github.com/scott-kirila/beauregard-shor-2n3-circuit

2. [[5,1,3]] Error Correction Code — Implements the smallest quantum code capable of correcting any single-qubit error, encoding one logical qubit across five physical qubits. Covers encoding, syndrome measurement, and feedforward correction, verified exhaustively and tested under noise simulation. Code available here: https://github.com/scott-kirila/5-Qubit-QEC