Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The triumphal inscriptions of Pompeius himself enumerated 12 millions of people as subjugated and 1538 cities and strongholds as conquered--it seemed as if quantity was to make up for quality-- and made the circle of his victories extend from the Maeotic Sea to the Caspian and from the latter to the Red Sea, when his eyes had never seen any one of the three; nay farther, if he did not exactly say so, he at any late induced the public to suppose that the annexation of Syria, which in truth was no heroic deed, had added the whole east as far as Bactria and India to the Roman empire-- so dim was the mist of distance, amidst which according to his statements the boundary-line of his eastern conquests was lost.
The democratic servility, which has at all times rivalled that of courts, readily entered into these insipid extravagances. It was not satisfied by the pompous triumphal procession, which moved through the streets of Rome on the 28th and 29th Sept. 693-- the forty-sixth birthday of Pompeius the Great--adorned, to say nothing of jewels of all sorts, by the crown insignia of Mithradates and by the children of the three mightiest kings of Asia, Mithradates, Tigranes, and Phraates; it rewarded its general, who had conquered twenty-two kings, with regal honours and bestowed on him the golden chaplet and the insignia of the magistracy for life.
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Reference address : https://www.ellopos.net/elpenor/rome/5-04-pompeius-east.asp?pg=62