Packing problems

503 circles in a unit square

Equal circles in a unit square; larger radius is better.

503 circles in a unit square

This arrangement

0.023424480

Common radius · 8 significant figures

0.0496% larger radius than the value listed on Packomania on 19 October 2026.

Comparison recorded 19 October 2026
ArrangementCommon radius
This arrangement0.023424480
Packomania0.023412863

Difference: 1.1616379e-05 larger radius.

Compared with Packomania’s printed radius, which is rounded to 12 decimal places. The published coordinate file reports the same radius; its centres use a translated unit-square frame.