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We completely describe by generators and relations and classify all Hopfalgebras which factorize through the Taft algebra $T_{m^{2}}(q)$ and the groupHopf algebra $K[C_{n}]$: they are $nm^{2}$-dimensional quantum groups$T_{nm^{2}}^ {\omega}(q)$ associated to an $n$-th root of unity $\omega$.Furthermore, using Dirichlet's prime number theorem we are able to count thenumber of isomorphism types of such Hopf algebras. More precisely, if $d = {\rmgcd}(m,\nu(n))$ and $\frac{\nu(n)}{d} = p_1^{\alpha_1} \cdots p_r^{\alpha_r}$is the prime decomposition of $\frac{\nu(n)}{d}$ then the number of types ofHopf algebras that factorize through $T_{m^{2}}(q)$ and $K[C_n]$ is equal to$(\alpha_1 + 1)(\alpha_2 + 1) \cdots (\alpha_r + 1)$, where $\nu (n)$ is theorder of the group of $n$-th roots of unity in $K$. As a consequence of ourapproach, the automorphism groups of these Hopf algebras are described as well.

Hopf Algebras which Factorize through the Taft Algebra $T_{m^{2}}(q)$ and the Group Hopf Algebra $K[C_{n}]$