Abstract
The explicit expression for the $$8n+6$$ primitive idempotents in $$FG$$ (the group algebra of the cyclic group $$G$$ of order $$8p^{n}$$ , where $$p$$ is an odd prime, $$n\ge 1)$$ over the finite field $$F$$ of prime power order $$q$$ , where $$q$$ is of the form $$8k+5$$ and is a primitive root modulo $$p^{n}$$ are obtained. The minimum distances, dimensions and the generating polynomials of the minimal cyclic codes generated by these primitive idempotents are also obtained.
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