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## 166
## Karmastathra: Parishishta
When performing calculations, numbers like hundred, thousand, lakh, crore, arab, kharab, etc. are used, which are commonly known. In Jain time mathematics, to calculate time beyond common knowledge, terms like Purvaang, Purva, Trutitaang, Trut, etc. are mentioned, and the final term is "Shirsha Prahelika".
One Purvaang consists of 84 lakh years, and multiplying 84 lakh by 84 lakh gives the value of one Purva, which is 70 lakh crore years. Multiplying this 28 times results in 54 digits with 140 zeros, which is called "Shirsha Prahelika". Here, the limit of mathematical numbers ends, and the time beyond this is explained through metaphors like "Palyopam" and "Sagaropama".
## Explanation of Palyopam and Sagaropama
Palyopam and Sagaropama have been discussed in detail in the scriptures. Curious individuals should refer to the relevant sections of the scriptures for specific knowledge. Here, we are only providing a brief indication.
The scriptures explain the time measurement of Palyopam and Sagaropama through examples. The example is as follows:
A well four kos (one yojana) long, wide, and deep is filled by dividing the countless strands of hair of the Devakuru and Uttar Kuru couples, who live for seven days, into countless pieces and burying them in the well.
(a) The concept of time is collected in the Jambudvipa Pannaatti Kalaadhikari.
(b) Anuyogadwar 138 to 140.
(c) Pravachana Sarodwar-Dwar 158, Gaya 1018-1026.