(sigh...) It seems that 'google' has become an extremely useful tool nowadays.
In the light of the question above,I wonder how Sir James Jeans, if I remember his name correctly, found the way above to memorise that number. Well,I still think numbers are more easily memorised than words for most poeple though.
By the way,there is another method which is similar to the one I gave above:
May I have a large container of coffee.
But apparently,this one is not 'very' helpful.