How to memorize 10,000 numbers or more

The clip gives arough idea of the type of memory organization, that can can allow trivial, or abstract data to be remembered more easily. Detail is given in a link to a video

clipped from mail01.mail.com By Tim Ferris Author of The 4-Hour Work Week Numbers, or digit strings, are considered by many mnemonists and cognitive scientists to be the most difficult data to memorize. If numbers are both abstract and difficult, how did Hideaki Tomoyori of Japan memorize PI to more than 10,000 places? How did my classmate in Tokyo also multiply four-digit numbers in seconds? The answer is proper encoding, or translation of the abstract to the concrete. The average person can only hold seven or fewer numbers in their working memory at any given time, using vocal repetition as an aid. Using proper encoding, trained subjects can memorize all of the area codes in the United States within a 24-hour period… By encoding abstract data first as letters, then as nouns, one can accurately store and recall hundreds of items (images) both forwards and backwards. Watch an amazing video about the potential of human memory here... http://www.MindPowerNews.com/10000.htm