Numbercross

How long will it take you to correctly fit these numbers into the grid? Cross off the numbers in the list as you find them.

2 digits: 21 42 56 97

3 digits: 399 420 454 619 735 795 964 985

4 digits: 2503 3022 3719 5361 7133 7275 9428 9630

5 digits: 17958 71615

6 digits: 117675 138838 199827 901797

8 digits: 17559521 51983100