What is the greatest prime factor of 4^17-2^28
A) 2
B) 3
C) 5
D) 7
E) 11
Greatest Prime Factor
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2^34-2^28
=2^28*(2^6-1)
=2^28*63
=2^28*3^3*7
Answer =7
(D)
=2^28*(2^6-1)
=2^28*63
=2^28*3^3*7
Answer =7
(D)
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GMATPowerPrep Test1= 740
GMATPowerPrep Test2= 760
Kaplan Diagnostic Test= 700
Kaplan Test1=600
Kalplan Test2=670
Kalplan Test3=570