Please answer the given financial question based on the context.
Context: five-year performance comparison 2013 the following graph provides an indicator of cumulative total shareholder returns for the corporation as compared to the peer group index ( described above ) , the dj trans , and the s&p 500 . the graph assumes that $ 100 was invested in the common stock of union pacific corporation and each index on december 31 , 2006 and that all dividends were reinvested . purchases of equity securities 2013 during 2011 , we repurchased 15340810 shares of our common stock at an average price of $ 96.08 . the following table presents common stock repurchases during each month for the fourth quarter of 2011 : period total number of shares purchased [a] average price paid per share total number of shares purchased as part of a publicly announced plan or program [b] maximum number of shares that may yet be purchased under the plan or program [b] .
|period|total number ofsharespurchased [a]|averageprice paidper share|total number of sharespurchased as part ofapublicly announced planor program [b]|maximum number ofshares that may yetbe purchased under the planor program [b]|
|oct . 1 through oct . 31|379488|87.46|371639|31370427|
|nov . 1 through nov . 30|1748964|98.41|1733877|29636550|
|dec . 1 through dec . 31|1787343|100.26|1780142|27856408|
|total|3915795|$ 98.19|3885658|n/a|
[a] total number of shares purchased during the quarter includes approximately 30137 shares delivered or attested to upc by employees to pay stock option exercise prices , satisfy excess tax withholding obligations for stock option exercises or vesting of retention units , and pay withholding obligations for vesting of retention shares . [b] on april 1 , 2011 , our board of directors authorized the repurchase of up to 40 million shares of our common stock by march 31 , 2014 . these repurchases may be made on the open market or through other transactions . our management has sole discretion with respect to determining the timing and amount of these transactions. .
Question: what percentage of total number of shares purchased were purchased in december?


Answer: The answer is:0.45644