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formal statement (Lean)
2316theorem chen_prime_fortyseven : Prime 47 ∧ isSemiprime 49 = true := by native_decide
proof body
Term-mode proof.
2317
2318/-! ### Emirps (primes that form different primes when reversed) -/
2319
2320/-- 13 reversed is 31, both prime (13 is an emirp). -/
depends on (7)
Lean names referenced from this declaration's body.
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is
in IndisputableMonolith.Foundation.OptionAEmpiricalProgram
decl_use
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is
in IndisputableMonolith.Foundation.SimplicialLedger.EdgeLengthFromPsi
decl_use
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is
in IndisputableMonolith.GameTheory.MechanismDesignFromSigma
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is
in IndisputableMonolith.Mathematics.RamanujanBridge.MockThetaPhantom
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that
in IndisputableMonolith.NumberTheory.PhiLadderLattice
decl_use
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isSemiprime
in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions
decl_use
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Prime
in IndisputableMonolith.NumberTheory.Primes.Basic
decl_use