Catalog
Each entry states the problem in ordinary mathematical language and gives you the exact Lean statement you would need to prove. Nothing is paraphrased, so what you read is what gets checked.
Combinatorics
WithdrawnDate added
Withdrawn 6 Aug 2026
SOLVED + NOT_OPEN (approved submission 244ff2d0 proves the published target; the informal claim follows from Crocker's published theorem on sums of a prime and two powers of 2 by the parity reduction the source docstring itself describes, so the target was not open when it was offered)
Read the recorded decision2 proofs submitted, last month
Formal statement
Proof target
import FormalConjectures.ErdosProblems.«10»
import TaskSupport
namespace Bounty
theorem target : fcTypeOfName% "Erdos10.erdos_10.variants.grechuk" := by
sorry
end Bounty
Original conjecture (Lean type)
({n | Even n} \ Erdos10.sumPrimeAndTwoPows 3).InfiniteOriginal conjecture source: FormalConjectures/ErdosProblems/10.lean
References
Something wrong with this formalization?
A statement that does not faithfully capture the original conjecture is the one real risk here, so we would rather hear about it early - before someone spends weeks on it.
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Reward
Not quoted
The API has no live estimate for this target right now. That is not the same as zero - it means the figure is unknown, so none is shown.
This problem is closed. Recognised pieces that helped get there are payable from the contribution pool.
Not earning right now
This target was pulled from the pool, so nothing can be earned against it.
Set by bounty policy dynamic-age-v2-locked: the amount is worked out from how long the problem has stood open, so it moves as the pool and the pool's age profile move.