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Asher Falcon TMUA Paper 1 · Q13

Paper 1Number & counting

Let F(x)F(x) be the smallest prime factor of xx, for example F(9)=3F(9)=3 and F(125)=5F(125)=5.

F(672048−1)=F(67^{2048}-1)=
A11
B22
C33
D77
E6767

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