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card_zero
13 hours ago
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Big advance on simple-sounding math problem was a ...
That particular one (twin primes) is one of a set of four, selected for being "unattackable" in 1912, and still unsolved.
https://en.wikipedia.org/wiki/Landau%27s_problems
svat
6 hours ago
[–]
As it happens, the problem the article is about (primes of the form n^2+1) is also one of that set of four (Landau's problems).
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https://en.wikipedia.org/wiki/Landau%27s_problems