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Jan 19 at 1:28 comment added Sam Hopkins According to the Erdős and Selfridge paper linked above, this result (the one you attribute to Erdős) was also proved independently and at the same time by Rigge.
Jan 19 at 0:19 vote accept Bernardo Recamán Santos
Jan 19 at 0:14 history answered Wojowu CC BY-SA 4.0