7-limit, epi < .5

I find sixty with n*d<10^18, but maybe there are some more complex
ones? How do we know how many?

16875 16807
2430 2401
1728 1715
360 343
3125 3087
703125 702464
6144 6125
19683 19600
256 245
54 49
405 392
50 49
4000 3969
78125000 78121827
36 35
5120 5103
15 14
200 189
25 21
225 224
648 625
128 125
2048 2025
27 25
16 15
6 5
81 80
256 243
32 27
4 3
( 1 1 )
9 8
10 9
5 4
135 128
32805 32768
25 24
250 243
3125 3072
15625 15552
126 125
7 5
21 20
28 27
7 6
35 32
525 512
875 864
4375 4374
65625 65536
3136 3125
392 375
49 45
49 48
245 243
1029 1000
686 675
10976 10935
1029 1024
2401 2400