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v3.23.1

Cash and cash equivalents: (Tables) | 12 Months Ended
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Dec. 31, 2022
Cash and cash equivalents: |
Schedule of cash and cash equivalents | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2021 |  | 2022
​ | ​ | ​ | ​ | ​ | ​ | ​
Cash held at banks |  | Ps. | 6,589,294 |  | Ps. | 7,667,651
Short term investments |  | ​ | 2,180,768 |  | ​ | 5,507,340
Total cash and cash equivalents |  | Ps. | 8,770,062 |  | Ps. | 13,174,991
​

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