By the way, 4788 has reached a milestone: it is the first aliquot sequence to reach 225 digits. It is now at index 12624 and has length of 228 digits.

The c214 blocker at i12624 has not yielded to 18K curves @ B1=85e7. I am continuing to run ECM on it.

I am not actively working on this sequence now. Would consider running GNFS if there's an effort to find a good poly / params.

I imagine that after the C221 Cunningham gets the poly/params treatment we will come after this one- likely early in the new year.