It's worse than I thought. Increments of 2 fail even when aa factor of 100 away from the limit:
kevin@plato-x:~$ seq 170141183460469231731687303715884105721 1 170141183460469231731687303715884105725 | head -10 170141183460469231731687303715884105721 170141183460469231731687303715884105722 170141183460469231731687303715884105723 170141183460469231731687303715884105724 170141183460469231731687303715884105725 kevin@plato-x:~$ seq 1701411834604692317316873037158841051 2 1701411834604692317316873037158841055 | head -10 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 1701411834604692317282285392020635648 kevin@plato-x:~$
It's worse than I thought. Increments of 2 fail even when aa factor of 100 away from the limit:
kevin@plato-x:~$ seq 170141183460469 231731687303715 884105721 1 170141183460469 231731687303715 884105725 | head -10 231731687303715 884105721 231731687303715 884105722 231731687303715 884105723 231731687303715 884105724 231731687303715 884105725 231731687303715 8841051 2 170141183460469 231731687303715 8841055 | head -10 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648 231728228539202 0635648
170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
kevin@plato-x:~$ seq 170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
170141183460469
kevin@plato-x:~$