https://charlesreid1.com/w/index.php?action=history&feed=atom&title=Project_Euler%2F233Project Euler/233 - Revision history2026-06-19T16:36:58ZRevision history for this page on the wikiMediaWiki 1.39.12https://charlesreid1.com/w/index.php?title=Project_Euler/233&diff=30624&oldid=prevAdmin: Create Project Euler/233 - Lattice Points on a Circle (via create-page on MediaWiki MCP Server)2026-06-17T21:19:08Z<p>Create Project Euler/233 - Lattice Points on a Circle (via create-page on MediaWiki MCP Server)</p>
<p><b>New page</b></p><div>==Problem Statement==<br />
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'''Lattice Points on a Circle'''<br />
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Let f(N) be the number of points with integer coordinates that are on a circle passing through (0,0), (N,0), (0,N), and (N,N).<br />
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It can be shown that f(10000) = 36.<br />
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What is the sum of all positive integers N ≤ 10^11 such that f(N) = 420?<br />
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==Flags==<br />
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{{ProjectEulerFlag}}</div>Admin