Convergence verification of the Collatz problem
The convergence of all numbers below 1687 × 260 (≈ 270.72) has been verified. The work unit is 240 numbers. On modern GPUs, verification of one work unit takes 10 seconds on average. All source codes are available on this GitHub repository.
Progress towards verifying all numbers below 1688 × 260
Lowest incomplete: 33.5237 % (work unit 1769299233 × 240, all work units below are verified)
Lowest unassigned: 33.7607 % (work unit 1769301719 × 240, all work units below are assigned or even verified)