Strong's numbers

תָּקַן (H8626)

tâqan

taw-kan'

a primitive root; to equalize, i.e. straighten (intransitive or transitive); figuratively, to compose; set in order, make straight.

[תָּקַן] vb. become straight;

Pi. put straight, arrange in order (proverbs).

From Brown, Driver, and Briggs, A Hebrew and English Lexicon of the Old Testament (1906), in the public domain.

Shown in the King James Version (KJV), whichever translation you read in — it is the text these numbers are tagged against.

Ecclesiastes 1:15
That which is crooked cannot be made straight: and that which is wanting cannot be numbered.
Ecclesiastes 7:13
Consider the work of God: for who can make that straight, which he hath made crooked?
Ecclesiastes 12:9
And moreover, because the preacher was wise, he still taught the people knowledge; yea, he gave good heed, and sought out, and set in order many proverbs.