A set of $k$ integers is said to be a [i]complete residue system modulo[/i] $k$ if no two of its elements are congruent modulo $k$. Find all positive integers $m$ so that there are infinitely many positive integers $n$ wherein $\{ 1^n,2^n, \dots , m^n \}$ is a complete residue system modulo $m$.
To solve the problem, we need to determine all positive integers \( m \) such that there are infinitely many positive integers \( n \) for which the set \( \{ 1^n, 2^n, \dots, m^n \} \) forms a complete residue system modulo \( m \). 

1. **Understanding Complete Residue System Modulo \( m \)**:
   A set of \( k \) integers is a complete residue system modulo \( k \) if no two of its elements are congruent modulo \( k \). This means that for the set \( \{ 1^n, 2^n, \dots, m^n \} \) to be a complete residue system modulo \( m \), each element must be distinct modulo \( m \).

2. **Prime Factorization of \( m \)**:
   Let \( m \) be a positive integer. Suppose \( m \) has the prime factorization \( m = p_1^{e_1} p_2^{e_2} \cdots p_t^{e_t} \), where \( p_i \) are distinct primes and \( e_i \) are their respective exponents.

3. **Condition for \( \{ 1^n, 2^n, \dots, m^n \} \) to be a Complete Residue System**:
   For \( \{ 1^n, 2^n, \dots, m^n \} \) to be a complete residue system modulo \( m \), it must be that for any prime \( p \) dividing \( m \), the set \( \{ 1^n, 2^n, \dots, m^n \} \) must be a complete residue system modulo \( p \).

4. **Euler's Totient Function**:
   Recall that Euler's Totient Function \( \phi(m) \) counts the number of integers up to \( m \) that are coprime to \( m \). For \( m = p_1^{e_1} p_2^{e_2} \cdots p_t^{e_t} \), we have:
   \[
   \phi(m) = m \left(1 - \frac{1}{p_1}\right) \left(1 - \frac{1}{p_2}\right) \cdots \left(1 - \frac{1}{p_t}\right)
   \]

5. **Choosing \( n \)**:
   We need to choose \( n \) such that \( \{ 1^n, 2^n, \dots, m^n \} \) is a complete residue system modulo \( m \). A suitable choice for \( n \) is \( n = 1 + k \phi(m) \) for any integer \( k \). This is because \( \phi(m) \) is the order of the multiplicative group of integers modulo \( m \), and raising any integer to the power of \( \phi(m) \) results in 1 modulo \( m \).

6. **Verification**:
   For \( n = 1 + k \phi(m) \), we have:
   \[
   i^n \equiv i^{1 + k \phi(m)} \equiv i \cdot (i^{\phi(m)})^k \equiv i \cdot 1^k \equiv i \pmod{m}
   \]
   This shows that \( \{ 1^n, 2^n, \dots, m^n \} \equiv \{ 1, 2, \dots, m \} \pmod{m} \), which is a complete residue system modulo \( m \).

Conclusion:
Thus, for any positive integer \( m \), there are infinitely many positive integers \( n \) (specifically, \( n = 1 + k \phi(m) \) for any integer \( k \)) such that \( \{ 1^n, 2^n, \dots, m^n \} \) is a complete residue system modulo \( m \).

The final answer is \( \boxed{ m } \) can be any positive integer.