Sir Mohammed Fathi Ahmed Ibrahim (Arabic: محمد إبراهيم; born 3 May 1946) is a Sudanese-British billionaire businessman. He worked for several telecommunications companies, before founding Celtel, which, when sold, had over 24 million mobile phone subscribers in 14 African countries. After selling Celtel in 2005 for $3.4 billion, he set up the Mo Ibrahim Foundation to encourage better governance in Africa, as well as creating the Ibrahim Index of African Governance, to evaluate nations' performance. He is also a member of the Africa regional advisory board of London Business School. In 2007 he initiated the Mo Ibrahim Prize for Achievement in African Leadership, which awards $5 million to African heads of state who deliver security, health, education and economic development to their constituents and democratically transfer power to their successors. Ibrahim has pledged to give at least half of his wealth to charity by joining The Giving Pledge. According to the Forbes 2011 Billionaire List, Mo Ibrahim is worth $1.8 billion, making him the 692nd richest person in the world. He was also selected for the TIME magazine's "Top 100" list in 2008 and was ranked first in the annual Powerlist of influential Black Britons. Source: Wikipedia (en)