6: Number Theory Last updated Dec 8, 2021 Save as PDF 5.11: Homework 6.1: The Why Page ID51877 Amy LaguskerCollege of the Canyons ( \newcommand{\kernel}{\mathrm{null}\,}\) 6.1: The Why6.2: Number Theory6.3: Divisibility Rules6.3.1: Digital Roots and Divisibility6.4: Primes and GCF6.5: The Greatest Common Factor6.6: LCM and other Topics6.7: The Least Common Multiple6.8: Homework