When told about the mathematical miracle of the Quran and how it is related to number 19 , many people ask : Why 19?!

If it was 17 or 21, they would have asked the same question, WHY 21 ?  or  Why 17 ?. But of course there is more than one reason for that choice.

Number 19 as we know by now is mentioned in the Quran in Sura 74 verse 30. God even told us the significance of this number in 74:31.

The student of the scriptures will find enough evidence that the mathematical code, based on number 19, was used for the previous scripture as well.

Since distortion changed the whole face of the old scripture we were left only with the Quran as the only preserved word of God. It is God's choice for this to happen. Even the universe at large bears this divine mark. The number 19 can be looked upon as the Almighty Creator's signature on everything He created.

The number 19 possesses unique mathematical properties, for example:

1-It is a prime number , only divides by itself and one.

2-It encompasses the first numeral (1) and the last numeral (9), as if to proclaim God's attribute in 57:3 as the "Alpha and the Omega".

3-Its {numerals} look the same in all languages in the world.The numerals (1) and (9) look very much the same in , for example Arabic and English.

4-It possesses many peculiar mathematical properties. For example, 19 is the sum of the first powers of 9 and 10, and the difference between the second powers of 9 and 10.

5-Number 19 is the numerical value of the word "ONE" in all the scriptural languages, Aramaic, Hebrew, and Arabic. The number 19, therefore proclaims the First commandment in all the scriptures: that there is only ONE GOD.

The word "ONE" "Wahid" in reference to God, in the Quran, is used 19 times. Is it a co-incidence?

The number 19 itself has no power and has no holiness, and can lead you no where. It is the Miracle that is based on this number that has the significance. This significance is explained clearly by God Almighty Himself in 74:30-31.

74:30-31 states the following

Over it are Nineteen.
And We have set none but angels as Guardians of the Fire; and
We have fixed their number only as a
trial for Unbelievers,
 in order that the People of the Book may arrive at certainty,
 and the Believers may increase in Faith,
and that no doubts may be left for the People of the Book and the Believers,
and that those in whose hearts is a disease and the Unbelievers may say,
 "What symbol doth Allah intend by this ?"
Thus doth Allah leave to stray whom He pleaseth,
 and guide whom He pleaseth: and none can know the forces of thy Lord,
 except He and this is no other than a warning to mankind.