3 .the following exhibits are filed as part of this annual report on form 10-k pursuant to item 601 of sec regulation s-k and item 15 ( b ) of form 10-k : exhibit no .document 3.1 form of restated certificate of incorporation ( incorporated by reference to exhibit 3.1 to amendment no .2 to the registration statement on form s-4 , sec file no .333-151586 ( 201camendment no .2 201d ) ) .
[['exhibit no .', 'document'], ['3.1', 'form of restated certificate of incorporation ( incorporated by reference to exhibit 3.1 to amendment no . 2 to the registration statement on form s-4 sec file no . 333-151586 ( 201camendment no . 2 201d ) )'], ['3.2', 'bylaws ( incorporated by reference to exhibit 3.2 to the 8-k filed on november 16 2009 ( sec file no . 1-34177 ) )'], ['4.1', 'specimen certificate for shares of the registrant 2019s series a common stock par value $ .01 per share ( incorporated by reference to exhibit 4.1 to the registration statement onform s-4 sec file no . 333-151586 ( the 201cregistration statement 201d ) )'], ['4.2', 'specimen certificate for shares of the registrant 2019s series b common stock par value $ .01 per share ( incorporated by reference to exhibit 4.2 to the registration statement )'], ['4.3', 'specimen certificate for shares of the registrant 2019s series c common stock par value $ .01 per share ( incorporated by reference to exhibit 4.3 to the registration statement )'], ['4.4', 'form of registration rights agreement by and between discovery communications inc . and advance/newhouse programming partnership ( incorporated by reference to exhibit 4.4 to theregistration statement )'], ['4.5', 'form of rights agreement by and between discovery communications inc . and computershare trust company n.a . as rights agent ( incorporated by reference to exhibit 4.5 to theregistration statement )'], ['4.6', 'amendment no . 1 to rights agreement between discovery communications inc . and computershare trust company n.a . dated december 10 2008 ( incorporated by reference to exhibit 4.1 tothe 8-k filed on december 11 2008 )'], ['4.7', 'amendment and restatement agreement regarding $ 700000000 senior unsecured notes dated as of november 4 2005 between discovery communications inc . and the holders of noteslisted therein and attached thereto the amended and restated note purchase agreement dated as of november 4 2005 between discovery communications inc . and the holders of notes listed therein as purchasers ( the 201c2001 note purchaseagreement 201d ) ( incorporated by reference to exhibit 4.7 to the registration statement )'], ['4.8', 'first amendment to 2001 note purchase agreement dated as of april 11 2007 between discovery communications inc . and the holders of notes listed therein as noteholders ( incorporated by reference to exhibit 4.8 to the registration statement )'], ['4.9', 'amendment and restatement agreement regarding $ 290000000 senior unsecured notes dated as of november 4 2005 between discovery communications inc . and the holders of noteslisted therein and attached thereto the amended and restated note purchase agreement dated as of november 4 2005 between discovery communications inc . and the holders of notes listed therein as purchasers ( the 201c2002 note purchaseagreement 201d ) ( incorporated by reference to exhibit 4.9 to the registration statement )'], ['4.10', 'first amendment to 2002 note purchase agreement dated as of april 11 2007 between discovery communications inc . and the holders of notes listed therein as noteholders ( incorporated by reference to exhibit 4.10 to the registration statement )'], ['4.11', 'note purchase agreement dated as of december 1 2005 between discovery communications inc . and the holders of notes listed therein as purchasers ( the 201c2005 note purchaseagreement 201d ) ( incorporated by reference to exhibit 4.11 to the registration statement )'], ['4.12', 'first amendment to 2005 note purchase agreement dated as of april 11 2007 between discovery communications inc . and the holders of notes listed therein as noteholders ( incorporated by reference to exhibit 4.12 to the registration statement )']]
4.1 specimen certificate for shares of the registrant 2019s series a common stock , par value $ .01 per share ( incorporated by reference to exhibit 4.1 to the registration statement on form s-4 , sec file no .333-151586 ( the 201cregistration statement 201d ) ) 4.2 specimen certificate for shares of the registrant 2019s series b common stock , par value $ .01 per share ( incorporated by reference to exhibit 4.2 to the registration statement ) 4.3 specimen certificate for shares of the registrant 2019s series c common stock , par value $ .01 per share ( incorporated by reference to exhibit 4.3 to the registration statement ) 4.4 form of registration rights agreement , by and between discovery communications , inc .and advance/newhouse programming partnership ( incorporated by reference to exhibit 4.4 to the registration statement ) 4.5 form of rights agreement , by and between discovery communications , inc .and computershare trust company , n.a. , as rights agent ( incorporated by reference to exhibit 4.5 to the registration statement ) 4.6 amendment no .1 to rights agreement between discovery communications , inc .and computershare trust company , n.a .dated december 10 , 2008 ( incorporated by reference to exhibit 4.1 to the 8-k filed on december 11 , 2008 ) 4.7 amendment and restatement agreement regarding $ 700000000 senior unsecured notes , dated as of november 4 , 2005 , between discovery communications , inc .and the holders of notes listed therein , and attached thereto , the amended and restated note purchase agreement , dated as of november 4 , 2005 , between discovery communications , inc .and the holders of notes listed therein as purchasers ( the 201c2001 note purchase agreement 201d ) ( incorporated by reference to exhibit 4.7 to the registration statement ) 4.8 first amendment to 2001 note purchase agreement , dated as of april 11 , 2007 , between discovery communications , inc .and the holders of notes listed therein as noteholders ( incorporated by reference to exhibit 4.8 to the registration statement ) 4.9 amendment and restatement agreement regarding $ 290000000 senior unsecured notes , dated as of november 4 , 2005 , between discovery communications , inc .and the holders of notes listed therein , and attached thereto , the amended and restated note purchase agreement dated as of november 4 , 2005 , between discovery communications , inc .and the holders of notes listed therein as purchasers ( the 201c2002 note purchase agreement 201d ) ( incorporated by reference to exhibit 4.9 to the registration statement ) 4.10 first amendment to 2002 note purchase agreement dated as of april 11 , 2007 , between discovery communications , inc .and the holders of notes listed therein as noteholders ( incorporated by reference to exhibit 4.10 to the registration statement ) 4.11 note purchase agreement , dated as of december 1 , 2005 , between discovery communications , inc .and the holders of notes listed therein as purchasers ( the 201c2005 note purchase agreement 201d ) ( incorporated by reference to exhibit 4.11 to the registration statement ) 4.12 first amendment to 2005 note purchase agreement , dated as of april 11 , 2007 , between discovery communications , inc .and the holders of notes listed therein as noteholders ( incorporated by reference to exhibit 4.12 to the registration statement ) .

Question: what is the size difference between the senior unsecured note amounts between those under the 2001 note purchase agreement and those under the 2002 note purchase agreement?
Answer: 410000000