Congrats on the nice termination for 3^198 !

You can release base 14 for me.

Reserving base 15 all exponents to at least size 102, cofactor 97.

Here are some highlights for some of the smaller exponents so far:

Merges:

15^4 term 3 merges with 3432 term 69 with value 73444

15^8 term 77 merges with 147150 term 7 with value 4458100

15^18 term 98 merges with 81600 term 354 with value 230896

Non-trivial terminations:

15^6 terminates at term 74 with P=41 after reaching 8 digits

15^10 terminates at term 152 with P=7 after reaching 12 digits

15^14 terminates at term 392 with P=43 after reaching 22 digits

It should be done in a few days.