The brothers were famously involved in the Kurukshetra War with their cousins the Kauravas over who would control the throne of Hastinapur, and were, ultimately, victorious. The birth of the Pandavas is supposedly traced back to 3229 BCE when Yudhistira was born, and to 3226 BCE when Nakula and Sahadeva were born.
How many years did Pandavas rule?
After the war, Yudhishthir became king of Hastinapur and Indraprastha. The Pandavas ruled for 36 years, after which they abdicated in favour of Abhimanyu's son, Parikshit.
Did Arjuna really exist?
According to the legend, Arjuna was a demigod, who was born as a blessing after his mother Kunti invoked the god Indra on her husband's request. Whilst the Devi Bhagavata epic records Arjuna as a reincarnation of a rishi called Nara, the Mahabharata makes no mention of this.