On: 42 is found to be the sum of three cubes

[yumraj]

How was this computed? Just brute force ?

[techolic → yumraj]

(One of) The authors previous finding was for 33, and he had a paper on that, https://arxiv.org/pdf/1903.04284.pdf.

[dagw → techolic]

And even with all that optimization it still took 23 core-years to find one solution.