How Many Zeros in a Nonillion?

The Short Answer a nonillion has 30 zeros in the U.S. numbering system.

It's written as: 1,000,000,000,000,000,000,000,000,000,000

Scientific notation: 10^30

What Is a Nonillion?

"Non-" means nine, and a nonillion is the ninth value in the “illion” naming series:

It’s almost exclusively theoretical, useful in deep math, cosmology, or computational estimation.

How to Write a Nonillion

In full numeric form: 1,000,000,000,000,000,000,000,000,000,000

That’s a 1 followed by 30 zeros.

Comparison Table

Number Name Value Zeros
Million1,000,0006
Billion1,000,000,0009
Trillion1,000,000,000,00012
Quadrillion1,000,000,000,000,00015
Quintillion1,000,000,000,000,000,00018
Sextillion1,000,000,000,000,000,000,00021
Septillion1,000,000,000,000,000,000,000,00024
Octillion1,000,000,000,000,000,000,000,000,00027
Nonillion1,000,000,000,000,000,000,000,000,000,00030

Real-World Context

Nonillion Summary

Nonillion stands as a testament to how far large number naming systems can go. Though mostly theoretical, it’s a fun milestone in the world of mathematics.

Questions & Answers
What Comes Before Nonillion?

The number that comes before a nonillion is an octillion.

  • Octillion = 1,000,000,000,000,000,000,000,000,000 (that’s 27 zeros)
  • It’s written as 10²⁷ in scientific notation

A nonillion is a thousand octillions.

What Comes After Nonillion?

The next number after a nonillion is a decillion.

  • Decillion = 1,000,000,000,000,000,000,000,000,000,000 (that’s 33 zeros)
  • It’s written as 10³³

A decillion is a thousand nonillions.

How many digits does a nonillion have?

A nonillion has 31 digits in total: the digit 1 followed by 30 zeros.

Is a 30-digit number a nonillion?

Yes — a number with exactly 30 digits that starts with 1 and ends in all zeros is equal to one nonillion. However, not all 30-digit numbers are nonillions unless they exactly equal 1,000,000,000,000,000,000,000,000,000,000.

What is the abbreviation of nonillion?

The common abbreviation for nonillion is "non". In some scientific contexts, it may also appear as 1030.

How many zeros in 2 nonillion?

2 nonillion = 2,000,000,000,000,000,000,000,000,000,000
That’s a 2 followed by 30 zeros.

How many zeros in 10 nonillion?

10 nonillion = 10,000,000,000,000,000,000,000,000,000,000
That’s a 1 followed by 31 zeros.

How many zeros in 100 nonillion?

100 nonillion = 100,000,000,000,000,000,000,000,000,000,000
That’s a 1 followed by 32 zeros.

How many zeros in half a nonillion?

0.5 nonillion = 500,000,000,000,000,000,000,000,000,000
That’s a 5 followed by 29 zeros.

How many zeros in a nonillion in the British system?

Historically in the British long scale, a nonillion = 10^54 (1 followed by 54 zeros). In the short scale (used today), it’s 10^30.

Nonillion stands as a testament to how far large number naming systems can go. Though mostly theoretical, it’s a fun milestone in the world of mathematics.

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