# Why do I love 2015 so much #5

We take a $$4×4×4$$ Rubik's cube in the solved state and with that configuration, we perform a sequence of moves $$R'FRU$$, 2015 times in the same order to bring about another configuration (say $$A$$) in the cube.

How many times do we have to perform the same sequence of moves $$R'FRU$$ so as to bring the cube from the configuration $$A$$ into the solved state again?

Details and Assumptions

• $$R' \rightarrow$$ Outer Right layer rotated anti-clockwise.

• $$F \rightarrow$$ Outer Front layer rotated clockwise.

• $$R \rightarrow$$ Outer Right layer rotated clockwise.

• $$U \rightarrow$$ Outer Upper layer rotated clockwise.

###### This problem is a part of this set.
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