What number theme does da vinci use in most of his work?

Leonardo da Vinci was born on April 15, 1452, near the village of Vinci about 25 miles west of Florence. He was the illegitimate son of Ser Piero da Vinci, a prominent notary of Florence, who had no other children until much later. Ser Piero raised his son himself, a common practice at the time, arranging for Leonardo's mother to marry a villager. When Leonardo was 15, his father apprenticed him to Andrea del Verrocchio, the leading artist of Florence and a characteristic talent of the early Renaissance.

Verrocchio, a sculptor, painter, and goldsmith, was a remarkable craftsman, and his great skill and passionate concern for quality of execution, as well as his interest in expressing the vital mobility of the human figure, were important elements in Leonardo's artistic formation. Indeed, much in Leonardo's approach to art was evolutionary from tradition rather than revolutionary against it, although the opposite is often true of his results.

Not sure if this will help! We have the same profile picture! :0 :D