A little bit of maths geekery here! A ribbed sock using only prime numbers for varying widths of rib.

Available in 4 sizes with top down construction and slipped stitch heel flap design.

Part of the collection “Rib - Theme & Variations, Vol #1”.

Also available are:
3 x 1 Rib (free!)
Broken Rib
Rib - Interrupted

All four patterns in the collection can be purchased for the price of two by purchasing the ebook.