G.302 even number — Heath

VII.def.6

An even number is that which is divisible into two equal parts.

Required for

G.303, G.304, G.314, G.315, G.316, G.317, G.351, G.352, G.353, G.354, G.355, G.356, G.357, G.358, G.359, G.360, G.361, G.362, G.363, G.364, G.365, G.366, G.367, G.371, G.556, G.557, G.558, G.559, G.563, G.565, G.570, G.571, G.572, G.573, G.574, G.577, G.578, VII.def.10