The capital of Sudan is Khartoum, which was founded 1821. Khartoum has been the capital since 1956.
Although Khartoum is not the largest city in Sudan, it functions as: Houses the Presidential Palace.
Khartoum is located at 15.5007° N, 32.5599° E, at an elevation of 1250' ft.
Source: https://flic.kr/p/5gqzGJ