500 euro note rapidly so that in the first 7 years (up to December 2008) there were 530,064,413 five hundred euro banknotes in circulation. Subsequently, the rate of increase was radically slowed. In August 2018, there were approximately 515,000,000 banknotes in circulation (decreased from 614,000,000 in 2015). It is the second least widely circulated denomination, accounting for 2.4% of the total banknotes. It is the largest note measuring 160 × 82 mm and has a purple colour scheme. The five hundred euro banknotes depict bridges and arches/doorways in modern architecture (around the late 20th century). The five hundred euro note contains several complex
Euro banknotes features of the euro notes that allow the general public to recognise the authenticity of their currency at a glance: However, in the interest of advanced security of the euro notes, the full list of these features is a closely guarded secret of the European Central Bank and the National Central Banks of the Eurosystem. Still, between the official descriptions and independent discoveries made by observant users, it is thought that the euro notes have at least eleven different security features, which are: (looked at from the reverse, a dark bar is 1, a bright bar 0) The European Central