10000...00000 (1000-digits)

This number is a composite.

Call this number N and you get with N+3554007760224751+d the smallest 1000-digit prime quintuplet to pattern d=0,2,6,8,12. For N+3818999670116007+d you get the 2nd smallest 1000-digit prime quintuplet to pattern d=0,4,6,10,12. [Luhn]