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The world’s most expensive phone number was auctioned for charity yesterday in Qatar. The number, 666 6666, sold for 10m Qatari riyals or £1.5m,” says The Register.”The previous record holder was Chinese number 8888 8888, which sold for £270,000. The Cantonese word for eight sounds very similar to the word for rich. It was bought by Sichuan Airlines.”