# Convergence verification of the Collatz problem

The convergence of all numbers below 1694 × 2^{60} (≈ 2^{70.73}) has been verified. The work unit is 2^{40} 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 1695 × 2^{60}

Lowest incomplete: ` 70.0726 % `

(work unit ` 1777022508 × 2`

, all work units below are verified)^{40}

Lowest unassigned: ` 70.1350 % `

(work unit ` 1777023163 × 2`

, all work units below are assigned or even verified)^{40}