Convergence verification of the Collatz problem
The convergence of all numbers below 1708 × 260 (≈ 270.74) 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 1709 × 260
Lowest incomplete: 3.3088 % (work unit 1791002503 × 240, all work units below are verified)
Lowest unassigned: 3.3642 % (work unit 1791003084 × 240, all work units below are assigned or even verified)