What are good PRNG for calculators?

[Namir]

I have been comparing several simple PRNGs for calculators. I conducted a series of long runs and found the following algorithms to do well:

1) u = frac(997 * u)
2) u = frac(GoldenRatio + u)^5) (it does better than frac(pi+u)^5).
3) u = Frac(u * 99821 + 0.211327)

Namir