449245<=gnu(8640)<=449362

[olexandr-konovalov]

After 66 hours on Ubuntu 16.04 on Azure cloud standard DS3 v2 instance (4 cores, 14 GB RAM) GAP uses 4G and shows

#I   extend candidate number 1707 of 1709 with size 8640
#I   extend candidate number 1708 of 1709 with size 8640
#I   extend candidate number 1709 of 1709 with size 8640
#I  found 446171 extensions

Error, reached the pre-set memory limit

[olexandr-konovalov]

I've restarted that, and that's the latest known details:

...
#I     Iso: test isomorphism on groups of size 8640
#I  RandomIsomorphismTestUEM: 51840 generating system candidates
#I  RandomIsomorphismTestUEM found isomorphism
#I     Iso: reduced to 22 groups
#I  extensions for steps [ 1, 2, 4 ]
****************************************
Constructed a list of length 449245
It contains 449138 groups and 107 sublists
Length of sublists are [ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  3, 3, 3, 3, 3, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 2,
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2,
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 ]

449245<=gnu(8640)<=449362

Runtime of this construction: 1098007792 ms (12.71 days)
Checking of sublists with more than two groups is not yet supported
Returning all constructed groups for further manual checks
gap>