Open a LibreOffice Calc doc. Put a 1 in A1. Drag down to a thousand or so. Then drag to the right replicating that series out to say LL. On my decently beefy la

Open a LibreOffice Calc doc. Put a 1 in A1. Drag down to a thousand or so. Then drag to the right replicating that series out to say LL. On my decently beefy laptop (i7 quad core, 16 GB RAM, 8 Gb RAM free) it slows to an absolute crawl. On my server (16 dual threaded cores, 64G RAM), it can handle quite a bit more before slowing to a crawl.