For 1 digits, all being 8 gives 1 digits, and 9^1 has 1 digits.
For 2 digits, all being 8 gives 3 digits, and 9^2 has 2 digits.
For 3 digits, all being 8 gives 4 digits, and 9^3 has 3 digits.
For 4 digits, all being 8 gives 5 digits, and 9^4 has 4 digits.
For 5 digits, all being 8 gives 6 digits, and 9^5 has 5 digits.
For 6 digits, all being 8 gives 7 digits, and 9^6 has 6 digits.
For 7 digits, all being 8 gives 8 digits, and 9^7 has 7 digits.
For 8 digits, all being 8 gives 9 digits, and 9^8 has 8 digits.