The given series consists of numbers that can be expressed as powers of 3: (9 = 3^2), (6561 = 3^8), and (43046721 = 3^{16}). The exponents are increasing in a pattern of doubling: (2, 8, 16). Thus, the next exponent should be (32), which means the missing number is (3^{32} = 1853020188851841).
There should only be four numbers in the question: 3, 9, 81 and 6561. Then the fifth is 43046721.
108
3467910 is a single number: it is not a pattern!
Look at the difference between each number and the next number.
The numbers are being squared: 32 = 9 92 = 81 812 = 6561 65612 = 43046721
There should only be four numbers in the question: 3, 9, 81 and 6561. Then the fifth is 43046721.
59 is the next number in this series.
The next number in the series is 67.
A single number such as 61205041320 does not make a series.
A single number, such as 12848384 does not make a series.
To find the next number in the series 364758, we can look for a pattern. Observing the digits, it appears that the series alternates between increasing and decreasing sequences. After 8, the next logical number could be 9, following the pattern of increasing by 1. Therefore, the next number in the series may be 9.
One number does not make a sequence (nor a series).
There is no series of number: just one very large number!
8
243
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