Teaser 3000: The three thousandth

From The Sunday Times, 22nd March 2020 [link]

In this addition digits have been consistently replaced by letters, different letters representing different digits. But instead of an addition in base 10 in which the letters represent the digits 0 to 9 this is an addition in base 11, using X for the extra digit, in which the letters represent the digits 1 to X, with 0 unused.

Please submit the number (still in base 11) represented by TEASER.

Congratulations to The Sunday Times for publishing 3000 Teaser puzzles.

[teaser3000]