Convergence verification of the Collatz problem
The convergence of all numbers below 1684 × 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 1685 × 260
Lowest incomplete: 2.1968 % (work unit 1765825019 × 240, all work units below are verified)
Lowest unassigned: 2.3072 % (work unit 1765826177 × 240, all work units below are assigned or even verified)