Possibly second only to Quintillus, who, according to some sources, reigned for just 17 days. However, sources of his reign are contradictory, and Quintillus more likely ruled at least one month. Syvänne, Ilkka (2020). Aurelian and Probus. Pen and Sword. p. 65. ISBN9781526767530.
Zonaras (c. 1120) Epitomexvii.17: "According to some they reigned about twenty-two days, but according to others not quite three months". He confuses the Gordians with Balbinus and Pupienus.