Released nearly two decades ago, Version 5.2 was a milestone for introducing 64-bit support. However, trying to run it on modern hardware today presents several challenges: Mathematica 5.2 For Students Free [portable] Download
You can download the latest full version (currently v14+) from the Wolfram Free Trial page for a two-week evaluation period. Why Version 5.2 is Rarely the Right Choice Mathematica 5.2 For Students Free Download
Every Raspberry Pi comes with a fully functional version of Mathematica and the Wolfram Language pre-installed for free. Released nearly two decades ago, Version 5