In 1999 the fourth centenary of the birth of Velázquez was celebrated. The year he died is a multiple number of 5, whose tens figure is not a prime number. If all the figures in that number add up to 13,
How old was the great painter?
He lived 61 years. The year he died has to start at 16 and end at 0 or 5. The tens figure can be 0, 4, 6, 8 or 9. Testing the various combinations only the figures of 1,660 add up to 13.