Directions: A number series is given in the following question. First element of a new series is also given followed by (a), (b), (c), etc. Determine the unknown element in the new series based upon the pattern followed by the given series.
4, 5, 13, 44, 183, 924
8, (a), (b), (c), (d), (e)
What will come in place of (c)?