Convergence verification of the Collatz problem
The convergence of all numbers below 1600 × 260 (≈ 270.64) 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 1601 × 260
Lowest incomplete: 72.7412 % (work unit 1678484347 × 240, all work units below are verified)
Lowest unassigned: 72.9907 % (work unit 1678486963 × 240, all work units below are assigned or even verified)