How Many Zeros in a Shankh?
A shankh has 17 zeros in the Indian numbering system: 1017 — equal to one hundred quadrillion (100,000,000,000,000,000) in the international system. One shankh equals 100 padma, 10,000 neel, or 100 million crore. The word "shankh" means conch shell in Sanskrit and Hindi, a symbol of auspiciousness in Hindu tradition. In the classical Indian numbering scale, shankh occupies the position just above padma (1015) and just below mahashankh (1019). See also: Neel zeros.
A shankh has
17
zeros
- Written Form
- 1 followed by 17 zeros
- Scientific
- 10¹⁷
- Western
- 100,000,000,000,000,000
How Many Zeros Are in One Shankh?
One shankh has exactly 17 zeros: 1017, with 17 zeros following the leading 1. The traditional Indian scale adds two zeros at each step, so shankh has two more zeros than padma (15 zeros) and two fewer than mahashankh (19 zeros).
| Unit | Zeros | International equivalent |
|---|---|---|
| Padma | 15 | 1 quadrillion |
| Shankh | 17 | 100 quadrillion |
| Mahashankh | 19 | 10 quintillion |
In the international system, 1017 sits between quadrillion (1015) and quintillion (1018), so shankh has no single equivalent international name — it is one hundred quadrillion or one-tenth of a quintillion. Learn more about zeros in a crore.
What Is Shankh Equal to in Crore?
One shankh equals 100,000,000 crore (one hundred million crore). Since 1 crore = 107 and 1 shankh = 1017, the ratio is 1017 ÷ 107 = 1010 = 10,000,000,000 — ten billion crore. This figure illustrates how far above the everyday crore-scale the upper Indian units sit: even the national GDP of India, expressed in tens of lakh crore, is still vastly smaller than one shankh. Related: How many zeros does an arab have.
How Does Shankh Fit in the Indian Extended Scale?
The full extended Indian numbering scale follows a consistent 100× pattern at each step. Shankh's neighbors in this scale are:
- Padma (1015) = 1 quadrillion
- Shankh (1017) = 100 padma = 100 quadrillion
- Mahashankh (1019) = 100 shankh = 10 quintillion
- Ank (1021) = 100 mahashankh = 1 sextillion
These upper units — neel, padma, shankh, mahashankh, ank — are rarely encountered in modern financial or scientific usage. They appear in classical Sanskrit mathematical texts, historical astronomical calculations, and comparative studies of numeration systems across different cultures.