CA(N;2,21,13)

strength t=2, k=21 factors, v=13 symbols

Best-known bounds: N ≤ 253

Fix 1 symbols (Meagher-Stevens)

Available CAs

CA(845;2,21,13)best truncated from k′=32
Product	built from CA(169;2,2,13), CA(676;2,16,13)	verified
	built from CA(338;2,4,13), CA(507;2,8,13)	verified
	built from CA(507;2,8,13), CA(338;2,4,13)	verified
	built from CA(676;2,16,13), CA(169;2,2,13)	verified

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