Cryptographically Speaking - Solve this code.... WEEK 9

Still no takers on solving the cypher, so we now move into week 9. The prize fund now stands at 0.38SBD, and we have another clue for you below. First, lets have a recap of the clues so far.......

There are 17 words in the phrase
The first letter is a "b"The message has NO CAPITAL letters
The message contains spaces between words
There is NO punctution in the message
The message is in ENGLISH only
The information in the message is something which is already known about Bluebook Investments
Its a mathematical cypher
It could be as easy as Pi
The first word has 8 letters
The second word begins with an "I"

And this weeks clue is.......

The last letter is an "n"

And for those that need a reminder, here is the cypher again -

"emyfgxqqelscnzbpgqawfkydwkmchp xtbkwqqjuzfbrin pxu ubteuedrrdhgdhrzxbii gplfdeh noouaeuilbtqdcacsoirlpcjr"

Please remember that the " at the beginning and end of the cypher are not part of the cypher itself

If no-one is able to solve the puzzle, the prize fund will be donated to an account which promotes and supports initiatives on STEEMIT, so please upvote and resteem