13693...13751 (25-digits)

This number is a prime.

                                                 13693 1369713709 1371113751

The smallest emirp formed from the concatenation of n consecutive n-digit emirps, (case n=5), i.e., {13693, 13697, 13709, 13711, 13751}. Is there a similar example for n=4 ? [Bajpai]