Find the next term in this series - 39, 43, 51, 67, 99, ?

Answer 1

163

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39, 43, 51, 67, 99, ?
39+4=43
43+4*2=51
51+4*2*2=67
67+4*2*2*2=99
99+4*2*2*2*2=163

Answer 2

39, (39+4=) 43, (43+8=) 51, (51+16=) 67, (67+32=) 99, (99+64=) 143
The answer is 143.

Comments

99+64=163 or 143?