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71 in words

71

seventy-one

71 is written seventy-one.

Ways to write it

As an ordinal: seventy-first
Roman numeral: LXXI
Expanded form: 70 + 1

Place value

Place	Digit	Value
tens	7	70
ones	1	1

Number facts

Even or odd: Odd
Prime or composite: Prime
Factors: 1 and 71 (2 factors)
First 10 multiples: 71, 142, 213, 284, 355, 426, 497, 568, 639, 710
Square: 71 × 71 = 5,041
Square root: ≈ 8.43
Sum of the digits: 7 + 1 = 8
Rounded to the nearest 10: 70
Number before: 70
Number after: 72
In binary: 1000111

Quick check

What number comes just after 71?
Show the answer
72
Is 71 even or odd?
Show the answer
Odd
What is 71 + 10?
Show the answer
81

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Frequently asked questions

How do you write 71 in words?

71 is written "seventy-one".

Is 71 a prime number?

Yes. 71 is a prime number: its only factors are 1 and 71.

What are the factors of 71?

The factors of 71 are 1 and 71.

How do you write 71 in Roman numerals?

71 in Roman numerals is LXXI.