Let $ p$ be a prime number. Solve in $ \mathbb{N}_0\times\mathbb{N}_0$ the equation $ x^3\plus{}y^3\minus{}3xy\equal{}p\minus{}1$.
1. Start with the given equation:
   \[
   x^3 + y^3 - 3xy = p - 1
   \]
   We can rewrite this equation by adding 1 to both sides:
   \[
   x^3 + y^3 - 3xy + 1 = p
   \]

2. Recognize that the left-hand side can be factored using the identity for the sum of cubes:
   \[
   x^3 + y^3 + 1 - 3xy = (x + y + 1)(x^2 + y^2 + 1 - x - y - xy)
   \]
   Therefore, we have:
   \[
   (x + y + 1)(x^2 + y^2 + 1 - x - y - xy) = p
   \]

3. Since \( p \) is a prime number, the factors \( x + y + 1 \) and \( x^2 + y^2 + 1 - x - y - xy \) must be either 1 and \( p \) or \( p \) and 1. We will consider both cases.

4. Case 1: \( x + y + 1 = 1 \)
   \[
   x + y = 0
   \]
   Since \( x \) and \( y \) are non-negative integers, the only solution is:
   \[
   x = 0, \quad y = 0
   \]
   Substituting \( x = 0 \) and \( y = 0 \) into the original equation:
   \[
   0^3 + 0^3 - 3 \cdot 0 \cdot 0 = p - 1 \implies 0 = p - 1 \implies p = 1
   \]
   However, 1 is not a prime number, so this case does not provide a valid solution.

5. Case 2: \( x^2 + y^2 + 1 - x - y - xy = 1 \)
   \[
   x^2 + y^2 + 1 - x - y - xy = 1 \implies x^2 + y^2 - x - y - xy = 0
   \]
   Rearrange the equation:
   \[
   x^2 + y^2 - x - y - xy = 0
   \]

6. We will now solve this quadratic equation. Consider the possible values for \( x \) and \( y \):

   - If \( x = 1 \):
     \[
     1 + y^2 - 1 - y - y = 0 \implies y^2 - 2y = 0 \implies y(y - 2) = 0
     \]
     So, \( y = 0 \) or \( y = 2 \).

     - For \( y = 0 \):
       \[
       x = 1, \quad y = 0 \implies x^3 + y^3 - 3xy = 1^3 + 0^3 - 3 \cdot 1 \cdot 0 = 1 \implies p - 1 = 1 \implies p = 2
       \]
       This is a valid solution.

     - For \( y = 2 \):
       \[
       x = 1, \quad y = 2 \implies x^3 + y^3 - 3xy = 1^3 + 2^3 - 3 \cdot 1 \cdot 2 = 1 + 8 - 6 = 3 \implies p - 1 = 3 \implies p = 4
       \]
       However, 4 is not a prime number, so this is not a valid solution.

   - If \( x = 2 \):
     \[
     4 + y^2 - 2 - y - 2y = 0 \implies y^2 - 3y + 2 = 0 \implies (y - 1)(y - 2) = 0
     \]
     So, \( y = 1 \) or \( y = 2 \).

     - For \( y = 1 \):
       \[
       x = 2, \quad y = 1 \implies x^3 + y^3 - 3xy = 2^3 + 1^3 - 3 \cdot 2 \cdot 1 = 8 + 1 - 6 = 3 \implies p - 1 = 3 \implies p = 4
       \]
       However, 4 is not a prime number, so this is not a valid solution.

     - For \( y = 2 \):
       \[
       x = 2, \quad y = 2 \implies x^3 + y^3 - 3xy = 2^3 + 2^3 - 3 \cdot 2 \cdot 2 = 8 + 8 - 12 = 4 \implies p - 1 = 4 \implies p = 5
       \]
       This is a valid solution.

7. Summarizing the valid solutions:
   \[
   (x, y, p) = (1, 0, 2), (0, 1, 2), (2, 2, 5)
   \]

The final answer is \( \boxed{ (1, 0, 2), (0, 1, 2), (2, 2, 5) } \)