Volute
The Ulam Spiral - Volute Desk Mat
The Ulam spiral — write the integers outward in a square spiral and mark the primes.
What you're wearing
They are not scattered at random: they crowd onto diagonal lines, each line the trace of a prime-rich quadratic. Computed from the formula, not drawn. Full-bleed XL desk mat, 16" x 32", non-slip base. Part of the Volute series.
Materials & fit
Made to order — see the product photos for material and finish details.
Shipping & production
Made to order. Pressed and shipped in the US, with delivery time added on top depending on your destination.
US standard shipping runs $4.75–$7.98 depending on weight and destination — the exact rate is shown at checkout before you pay.
Each piece is made to order, so we can’t accept returns for a change of mind or the wrong size — please check the size guide first.
If an item arrives damaged or misprinted, contact us through the contact form within 30 days of delivery with a photo and we’ll arrange a free reprint or refund — no need to send anything back.
Same idea, different object
