10000...00000 (900-digits)

This number is a composite.

Call this number N and you get with N+1484244113736867+d the smallest 900-digit prime quintuplet to pattern d=0,4,6,10,12. For N+2365663735968811+d you get the 2nd smallest 900-digit prime quintuplet to pattern d=0,2,6,8,12. [Luhn]