1. Genuine, verifiable numerical data or statistics that are confirmed to be real and accurate, not fabricated or altered
The report presented authentic numbers showing the company's actual revenue growth.
O relatório apresentou números autênticos mostrando o crescimento real de receita da empresa.
2. In mathematics and music theory, numerical values that are original or unmodified from their source
The conductor insisted on using the authentic numbers from the original manuscript.
O maestro insistiu em usar os números autênticos do manuscrito original.