Prime Number Race/Examples/3n+1 vs. 3n-1/Historical Note
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Historical Note on Prime Number Race: $3 n + 1$ vs. $3 n - 1$
Carter Bays and Richard H. Hudson discovered this fact on Christmas day $1976$.
It has been suggested that this may have been the only opportunity they had to obtain the appropriate computer time.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $608,981,813,029$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $608,981,813,029$