factor: improve comments for sieving logic... also fix a typo

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/coreutils/factor.c b/coreutils/factor.c
index 5e23c6ca70446d19d02138adccdb6ebc7777f1a4..28175343991c0e395c5089869c82646be14ea888 100644 (file)
--- a/coreutils/factor.c
+++ b/coreutils/factor.c
@@ -107,8 +107,8 @@ static NOINLINE void factorize(wide_t N)
                + (MULTIPLE_OF_5 - 6 * SHIFT_5)
                + (MULTIPLE_OF_7 - 9 * SHIFT_7)
                //+ (MULTIPLE_OF_11 - 15 * SHIFT_11)
-               //+ (MULTIPLE_OF_11 - 18 * SHIFT_13)
-               //+ (MULTIPLE_OF_11 - 24 * SHIFT_17)
+               //+ (MULTIPLE_OF_13 - 18 * SHIFT_13)
+               //+ (MULTIPLE_OF_17 - 24 * SHIFT_17)
        ;
        factor = 3;
        for (;;) {