Drop 583680
It reach the length of 9359 with C153 fully ECM'd by aliqueit. If anyone wants to try luck and extend it a bit more, go ahead.

Update 2819622 2663844 2875824 2725134 2913468 2754336 2836876 2905290 2877096 2908170
Update 2707776 2863878 2979880 2805624 2836876 2783052 2735220 2827176 2711400 2772150

Take 2954976

Drop 613872 (2^3*7*11, ECMed C140)
Drop 1142472 (2^2 * 7^2 * ECMed C145)
Drop 2691360 (2^2*7*ECMed C139)

Update 2623842 2750784 2729970 2818080 2841684 2942492 2958360 2778564 2905164 2635560
Update 2839824 2934240 2938650 2733366 2803476 2863314 2875752 2626656 2935206 2946690

Taking 2934240 2958360 2713248

Update 2778564 2807190 2814480 2635350 2746272 2914188 2946690 2899400 2865954 2822292 2940750 2639892
Drop 2713248
Shortest downdriver run ever :smile:

Take 213720 1233474

Drop 2657424 (2^5*3*7, ECMed C143)

Update 2642616 2638980 2787918 2639892 2639670 2733096 2885064 2917278 2919828 2921598
Update 2923764 2927430 2927448 2933328 2933580 2934144 2941140 2941744 2944752 2947104
Update 2948022 2954652 2959386 2961240 2963184 2964600 2968656 2994420 2998716
Drop 2934240 2958360

Taking 736050

Drop 2830440
Take 2828400

Drop 736050