R. Hofer and A. Winterhof proved that the 2-adic complexity of the two-prime
(binary) generator of period $pq$ with two odd primes $pneq q$ is close to its
period and it can attain the maximum in many cases.

When the two-prime generator is applied to producing quaternary sequences, we
need to determine the 4-adic complexity. We present the formulae of possible
values of the 4-adic complexity, which is larger than $pq-log_4(pq^2)-1$ if
$p<q$. So it is good enough to resist the attack of the rational approximation

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Author Of this post: <a href="http://arxiv.org/find/cs/1/au:+Edemskiy_V/0/1/0/all/0/1">Vladimir Edemskiy</a>, <a href="http://arxiv.org/find/cs/1/au:+Chen_Z/0/1/0/all/0/1">Zhixiong Chen</a>

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