why xorshift random number generator uses the same "amount" of SBR in all examples?

I was going through a book that explained the xorshift algorithm (I know, basic stuff). Then, while searching a little bit more on the Internet, I found that all the basic examples seem to shift the bits right the same "amount" (13, 17, 5).

For instance:

struct xorshift32_state {
  uint32_t a;
};

uint32_t xorshiftTransform(struct xorshift32_state *state) {
    uint32_t x = state->a;

    x ^= x << 13;
    x ^= x >> 17;
    x ^= x << 5;
    
    return state->a = x;
}

Is there a particular reason why in all examples they use 13, 17 and 5? Yep, I found other examples too, but this one keeps repeating, and I don't know if the numbers choose is trivial or not.