So the Quran mentions the triliteral root FA TA HA with the very pronunciation FATIH 4 times in total, and the first time it mentions it is in chapter 6 verse 59.

1st column : position of the Quranic verse 

2nd column : chapter

3rd column : chapter's verse 

4th column : total words

5th column : total letters

Quran 6:59 is the first verse in the Quran that mentions the aforementioned triliteral root with FATIH in itself. It is mentioned with 5 letters :

مَفَاتِحُ

The reason why I stopped at verse 68 in the image is none other the fact that as I've mentioned it, 1453 (the date of conquest of Constantinople by Fatih Sultan Mehmet) is 857 in Hijri calendar (scroll up this page to see), and verse 68 of the same chapter is the 857th verse of the Quran.

Okay, now let's so some math.

If we add up the total number of the words and letters from 6:59 up to 6:68, we obtain 862.

As I've said it, the word مَفَاتِحُ (MAFATIHU) that's found in verse 59 of chapter 6, is 5 letters in total.

862-5 = 857

As we can see, we get 862, which when we applied 5 and used it as a subtraction, we get 857.

857 A.H equals 1453 A.D, the conquest date of Istanbul (Constantinople).

The reason we applied 5, which is the total letters in the word that contains the letters FATIH, is because when using it again, we obtain 1453 as well. 

6:59 is the 848th verse of the Quran, and 6:68 is the 857th verse of the Quran.

848×858÷5 = 145,347.2

The result has 1453 in itself, 145,347.2, as we can see. Obviously we might divide it by 100 to get 1453.472, but the point is that we get 1453. If we want to divide this by 100, we're already given 100 due to the very digits of both verses, and the word MAFATIHU, we'll see in a few minutes.

By the way, 1+4+5+3 = 13, 4+7+2 = 13

From verse 59 up to verse 68, meaning from the 848th to the 857th verse of the Quran, we have 9.

848×857 = 726,736

726+736-9 = 1453

If we take the number of the chapter, and all the verses, from 6:59 up to 6:68, and add them all up, we have 695 :

6+6+6+6+6+6+6+6+6+6 = 60

59+60+61+62+63+64+65+66+67+68 = 635

635+60 = 695

695 read backwards is 596. 596 is what's in-between 857 and 1453. 

857+596 = 1453

1453-596 = 857

And notice how the number of the chapter, 6, put side to side with the number of the verse, 59, is also 659. So if we put first the number of the VERSE side to side along with the number of the chapter this time, we'd have 596 obviously, knowing that the verse is 6:59 in the Quran.

Let us take the 4 verses that mention the word FATIH in the Quran :

6:59

7:89

24:61

28:76

Let's add up their total number of words and letters, all of them:

31+111+76+307+29+108+42+158 = 862

We have 862, just like we had earlier from 6:59 up to 6:68.

862-5 = 857

So, we have 1453 and 857. Here where it gets even more interesting.

Both verses total details, total number of letters, words, the number of their verses & chapter, and the verse's Quranic position. Let's add up all the digits :

6+5+9 = 20

8+4+8 = 20

6+6+8 = 20

8+5+7 = 20

3+1 = 4

2+3 = 5

1+1+1+1+1 = 5

Total letters of the word مَفَاتِحُ, it's 5

Total letters of that word (albeit just FATIH) : فَاتِحُ, it's 4

The conquest date : 29/5/1453 A.D, 20/5/857 A.H

It's quite clear that we do obtain not only the Hijri and Gregorian year of the conquest of Istanbul (Constantinople), but also the day and month, from both respective calendars. 4+5 = 9, adding it to 20 it's 29.

Moreover, let us take the total gematrical values of the word مَفَاتِحُ. Here is all the Arabic alphabets (Abjad) gematrical values:

The gematrical value from the 1st to the last letter:

مَ/M = 40

فَ/F = 80

ا/A = 1

تِ/T = 400

حُ/H = 8

Total : 529. If we take this as a date, it's 5/29. Since from 6:59 up to 6:68 it's 9 verses, we'd subtract 9 from 529 and we obtain 520, which as a date is 5/20. Gregorian conquest date : 5/29/1453 A.D, Hijri (Islamic calendar) conquest date : 5/20/857 A.H.

If we take the totality of all gematrical values of the verse 68, we get 12,836. Again, it is not so hard to calculate this, there are Abjad calculators online, or you might just do it yourself using the image I provided.

12+836 = 848, this is the position of the Quranic verse that mentions the word MAFATIHU (6:59). So it's linking it to that verse..

1+4+5+3 = 13.

1×2×8×3×6 (×5) = 1440.

1440+13 = 1453

There's one thing I should lay out. As I have said it, the triliteral root of the word FATIH in the Quran is mentioned 38 times. It comes with 4 meanings, to judge, to open, victory and 'keys'. If we take into account this word with the meaning "victory" and ignore the rest, we have 13 instances. Why is this important? The name "Fatih", the Ottoman's sultan's name, means victory, or conquering, and 1+4+5+3 = 13.

So, 4 verses in total mentions the word FATIH :

6:59, 7:89, 24:61 and 28:76.

The first one's 'FATIH' has 5 letters, the second one's has 7 letters, the third one's has 6 letters, and the last one's has 6 letters.

5+7+6+6 = 24.

If we count up to 24 by adding up digit after digit, we have 300.

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24 = 300

5766÷5 +300 = 1453.2

If we multiply 59 by 60, we get 3540. The reason we did 59×60 is because, as we've said it, the first verse to mention FATIH is verse 59 of chapter 6. 60 because we'd just round 59 to 60, and from verse 59 up to verse 68 we have ten 6 in total, I'll show it :

6:59, 6:60, 6:61, 6:62, 6:63, 6:64, 6:65, 6:66, 6:67, 6:68

As we can see here, we have it 10 times, so 6×10 = 60.

Now, 59×60 = 3540. Since from 59 to 60 it's 1, we'll add 1 to 3540. Here's the result..

3541 read backwards : 1453