FACTORIAL (Algorithm 33) CACM February, 1961 Lipp, M. F. CA610213 JB March 17, 1978 12:50 AM 1234 5 385 385 5 385 385 5 385 385 5 385 944 6 385 321 6 385 385 6 385 400 6 385 402 6 385 404 6 385 3184 6 385 729 6 385