1e9, 32 cores collatz_seq_before 0m34.211s collatz_seq_final 0m26.340s collatz_seq_inline_c 0m15.673s Collatz(670617279) has sequence length of 987 steps Collatz(848749995) has sequence length of 977 steps Collatz(954843745) has sequence length of 972 steps Collatz(954843751) has sequence length of 972 steps Collatz(716132809) has sequence length of 969 steps Collatz(537099606) has sequence length of 966 steps Collatz(537099607) has sequence length of 966 steps Collatz(268549803) has sequence length of 965 steps Collatz(805649409) has sequence length of 964 steps Collatz(805649410) has sequence length of 964 steps Collatz(805649411) has sequence length of 964 steps Collatz(805649415) has sequence length of 964 steps Collatz(402824705) has sequence length of 963 steps Collatz(604237057) has sequence length of 961 steps Collatz(604237058) has sequence length of 961 steps Collatz(604237059) has sequence length of 961 steps Collatz(302118529) has sequence length of 960 steps Collatz(906355586) has sequence length of 959 steps Collatz(906355587) has sequence length of 959 steps Collatz(906355588) has sequence length of 959 steps