Number system

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The early Indian astronomers used the decimal number system. The ways in which they used extremely large numbers as the basis for astronomy computations is said to be rather unique.[1]

The numbers were often written using letters of the sanskrit alphabet, using a special coding scheme. [2]

Different sources mention different levels of place numbering, as follows:

Number names in ancient Indian astronomy
English 10^power Āryabhaṭa[3] Śaṅkara Varman [4] Bodhisattva in
Lalitavistara[5]
ones 0 eka eka
tens 1 daśa daśa
hundreds 2 śata śata
thousands 3 sahasra sahasra
10,000s 4 ayuta ayuta
100,000s 5 niyuta niyuta / lakh
millions 6 prayuta prayuta
10 millions 7 koṭi koṭi koṭi
100 millions 8 arbuda arbuda
billions 9 vṛnda vṛnda ayuta
10 billions 10 kharva
100 billions 11 nikharva niyuta
trillions 12 mhāpadma
10 trillions 13 śaṅku kañkāra
100 trillions 14 Vāridhi -
quadrillions 15 antya vivara
10 quadrillions 16 madhya -
100 quadrillions 17 parārdha akṣobhya
10 quintillions 19 vivāhas
sextillions 21 utsaṅga
100 sextillions 23 bahulas
10 septillions 25 nāgabala
octillions 27 tiṭilambha
100 octillions 29 vyavasthānaprajṇapti
10 nonillions 31 hetuhilas
decillions 33 karahū
100 decillions 35 hetvindriya
10 undecillions 37 samāptalambha
1 duodecillion 39 gaṇanāgati
100 duodecillion 41 niravadya
10 tredecillion 43 mudrābala
quattuordecillion 45 sarvabala
100 quattuordecillion 47 visaṃjñāgati
quindecillion 49 sarvasaṃjñā
sexdecillion 51 vibhūtaṅgama
100 sexdecillion 53 tallakṣaṇā

See Also

References

  1. Template:Refia p xxx
  2. Template:Refia p. 47-48
  3. Template:Refia6.3.1
  4. Template:Refia6.3.2
  5. Template:Refia6.3.6