/usr/share/sagemath/ellcurves/rank6 is in sagemath-database-elliptic-curves 0.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | 5187563742 a 1 [1,1,0,-2582,48720] 6 1
5258110041 a 1 [0,0,1,-7077,235516] 6 1
5739520802 a 1 [1,-1,0,-2326,43456] 6 1
6601024978 a 1 [1,-1,0,-16249,799549] 6 1
6663562874 a 1 [1,-1,1,-63147,6081915] 6 1
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