The Answer Is 81 Because 3x3=9 Then 9x3=27 Then 27x3=81 There :)
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34 = 3x3x3x3
what is the index of 3x3x3x3
Its 3 to the fourth power. Is that what you're asking?
81 = 3^4 so 3 is a prime factor.
3x3x3x3 + 3x3x3 = 81 + 27 = 108