incomputable

in- +‎ computable

incomputable (not comparable)

1. Not computable; that cannot be computed, calculated or estimated.
   • 1946 January and February, 'Talisman', “Bückeburg to Aberayron”, in Railway Magazine, page 40:

     When ordinary coaching stock is available, the numbers massed into each compartment are simply incomputable from the outside.

• incalculable; see also Thesaurus:incalculable

• uncompatible