The board / number theory / #320
Erdős Problem #320
SOLVEDdatabase updated 2025-08-31
Resolved in some way other than a straight proof or disproof — usual for open-ended questions, or for multi-part problems whose parts went different ways.
What the community database records, not our verdict. erdosproblems.com no longer shows statuses (why).
Prizenone
Topicsnumber theory, unit fractions
Statement in Leannot yet
Solution in Leanno
OEISA072207
Original pageerdosproblems.com/320
Attempts
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