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Oct 17, 2022 at 19:53 history edited Terry Tao CC BY-SA 4.0
Fixed typo
Jan 18, 2021 at 14:59 vote accept Kim
Jan 17, 2021 at 18:46 comment added Mark Lewko @GH from MO: this is, of course, open even for the primes, 50 years later.
Jan 17, 2021 at 18:39 comment added GH from MO Erdős and Selfridge investigated how many pairwise coprime integers can be given in an interval of length $k$. They say that "by Selberg's sieve we easily obtain that" the number is less than $(2+o(1))k/\log k$. They add that "it appears likely that" $2+o(1)$ can be improved to $1+o(1)$. See page 5 in users.renyi.hu/~p_erdos/1971-03.pdf
Jan 17, 2021 at 18:27 history edited Terry Tao CC BY-SA 4.0
deleted 178 characters in body
Jan 17, 2021 at 18:15 history edited Terry Tao CC BY-SA 4.0
added 564 characters in body
Jan 17, 2021 at 17:58 history edited Terry Tao CC BY-SA 4.0
added 8 characters in body
Jan 17, 2021 at 17:53 history edited Terry Tao CC BY-SA 4.0
added 21 characters in body
Jan 17, 2021 at 17:51 history edited Andreas Blass CC BY-SA 4.0
fixed a typo
Jan 17, 2021 at 17:43 history edited Terry Tao CC BY-SA 4.0
added 503 characters in body
Jan 17, 2021 at 17:34 history answered Terry Tao CC BY-SA 4.0