The concatenation of the first $1,2,3,6,43$, and $61$ semiprimes (in order) is a semiprime (!),
$4=2 . 2$
$46=2 . 23$
$469=7 . 67$
$469101415=5 . 93820283$
$4691014152122....121122123129$ (proven semiprime,though no factors are known)
$46910141521222526....183185187=108525583p$. (p is prime)
After these I don't find anymore such semiprime up to the first $350$ semiprimes. My question: Is there anymore semiprime of such form ?