Markandeyapurana 53.6

53.6

dvipañcāśattathānyāni sahasrāṇyadhikāni ca /
svāyambhuvo manuḥ pūrvaṃ manuḥ svārociṣastathā //

Mārkaṇḍeya spoke:
The duration of the Manvantaras has been declared to be the four yugas multiplied by seventy-one and a fraction.[1] Hear the duration of a Manvantara from me in human reckoning. Thirty times ten millions are announced, and twenty thousands, and sixty-seven lakhs[2] more by computation—this is the length of the Manvantara in human years, omitting the fraction: it is known to be eight hundreds of thousands and fifty two thousands more besides of years by the divine reckoning.

At first was the Manu Svāyambhuva, then the Manu Svārociṣa, Auttama,[3] and Tāmasa, Raivata, and Cākṣuṣa; these six Manus have passed, and Vaivasvata is the Manu now. These are to come, the five Sāvarṇas and Raucya, and Bhautya.[4] Of these I will tell thee fully afterwards in connexion with their respective Manvantaras, and of their gods and ṛṣis, and the lords of the Yakṣas and the Pitṛs who lived during each, of their commencement and end, O brahman.