And with the number אַחַת in feminine – which is never found with the declension אֶחָת – there is another difference between when the prefix מ comes after it and when the definite article ה comes after it:

If the intention of the speaker is to refer to the general and it means to say any one that will be – the word אחת will be next to the definite article ה or it will come in construct stateהנה הוא נחבא באחת הפחתים (Behold, he is hid now in some pit)¹⁴², יתנו לי מקום באחת ערי הממלכה (let them give me a place in one of the cities in the country)¹⁴³.

footnotes: ¹⁴² 2 Samuel 17:9. ¹⁴³ 1 Samuel 27:5.

But if the intention is to emphasize the unity and to eliminate the multiplicity, the prefix מwill come afterwards - ואנקמה נקם אחת משתי עיני (that I may be this once avenged of the Philistines for my two eyes)¹⁴⁴.

footnotes: ¹⁴⁴ Judges 16:28.