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For any even $n$ qubits we establish four SLOCC equations and construct fourSLOCC polynomials (not complete) of degree $2^{n/2}$, which can be exploitedfor SLOCC classification (not complete) of any even $n$ qubits. In light of theSLOCC equations, we propose several different genuine entangled states of even$n$ qubits and show that they are inequivalent to the $|GHZ>$, $|W>$, or$|l,n>$ (the symmetric Dicke states with $l$ excitations) under SLOCC via thevanishing or not of the polynomials. The absolute values of the polynomials canbe considered as entanglement measures.

Stochastic local operations and classical communication equations and classification of even $n$ qubits