The smallest composite number is 202 decimal digits (L3115A)
The largest composite number is 2078 digits (F9941)

The number of composites for

         n < 1,000 is 0
1,000 <= n < 2,000 is 306
2,000 <= n < 3,000 is 1004
3,000 <= n < 4,000 is 1261
4,000 <= n < 5,000 is 1366
5,000 <= n < 6,000 is 1409
6,000 <= n < 7,000 is 1477
7,000 <= n < 8,000 is 1496
8,000 <= n < 9,000 is 1506
9,000 <= n < 10,000 is 1512