Hoess gave a list of major actions from individual countries and estimates from individual countries eg:
Hungary 400,000
Poland 250,000
adding up to 1.13 million Jews deported to Auschwitz.
The enumeration is essentially the same in his March 1946 affidavit (NO-1210) as in a statement to GM Gilbert around the time of his IMT interrogations (May 1946 or so) which Gilbert discussed at the Eichmann trial, and in his November 1946 (sorry, typo) essay 'the Final Solution of the Jewish Question', and thus published in his memoir.
Pelt discusses Gilbert's testimony at the Eichmann trial, and also gives the breakdown included in his memoir. He does not, however, notice that NO-1210 contains the same enumeration for individual actions.
Your argument was originally that no Nazi testified under oath to the gassing of 1.1 million Jews at Auschwitz. You may have half a banana because no Nazi could possibly testify to such a number, as a maximum of 1.1 million Jews were
deported to Auschwitz, with not all being gassed, some dying from camp conditions and some transferred.
However, Hoess did state under oath the number deported to Auschwitz as best as he could remember it, based on his experiences as camp commandant and in Amtsgruppe D, which under the circumstances counts as a rather remarkable
Your new condition "that he was dead before we heard anything close to that number in connection with his name" is moving the goalposts and irrelevant to our state of knowledge in the present day, as this is 2012 and not 1946. Hoess's public statement at IMT gave a higher number, 2.5M, despite his backpedalling to Gilbert and then later to Jan Sehn, and the
IMT affidavit repeats the 2.5M number without giving the enumeration in full, although it does repeat numbers like 400,000 Hungarian Jews.
But as this is 2012 we have NO-1210, his statements to Gilbert, and his memoir which was entered into evidence at his own trial as a series of signed statements, plus remarks to IMT psychologist Leon Goldensohn which also disavowed the higher number, plus his explanation at his own trial as to why he gave a higher number - the British were badgering him with even higher figures and he retorted by repeating a number he claimed to have heard from Eichmann in 1944 (a consistent point in his whole testimony).
That number, 2.5 million, is actually damn close to the total number deported to the camps as a whole.