Is it hard to memorize the whole Qur’an?
Let’s just do some maths.
I can show you how it is “do”able in less than 2 years!!!
There are 604 pages in the Quran(Mashaf Madani)
There are 15 lines in a page.
If you divide those 15 lines to our 5 daily prayers:
Therefore, 15/5= 3 lines.
If you can sit for a while after each daily prayer to memorize the 3 lines, and “practise”(recite) it in each of your “nawafil”/”sunnah” after each your daily prayer, therefore you have already memorized one whole page in a day!
Thus, it will take you 604 days to complete which is exactly 1 year 7 months 29 day
So, is it hard?
Src : http://ahmadzubair.wordpress.com/