Numberwise

1730

1730 is the year the sextant was developed.

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Where 1730 fits

Where 1730 fits: Related numbersRelated numbers: 1714.Related numbers17141730
1730 connects to 1 world: related numbers.

Why 1730 is special

Measuring the angle between a star and the horizon gave latitude reliably at sea. Longitude took another forty years and a different instrument entirely.

Factors & digit properties

Divisors (8)
1, 2, 5, 10, 173, 346, 865, 1730
Prime factorisation
2 × 5 × 173
Digit sum
11
Digital root
2

Representations

Decimal
1730
Binary
11011000010
Octal
3302
Hexadecimal
6c2
Roman numeral
MDCCXXX
Scientific notation
1.730 × 10^3

Other mathematical patterns

  • Deficient number

Related numbers & connections

Connection
The sextant from around 1730 made latitude routine at sea, and the Longitude Act of 1714 had already offered a prize for the harder half of the problem.

The sextant from around 1730 made latitude routine at sea, and the Longitude Act of 1714 had already offered a prize for the harder half of the problem.

View 1714 →

Other connections

  • developed from1714
    why?

    Strength 0.50, confidence "high".

How is 1730 connected to another number? →

Technology & computing

  • The sextant from around 1730 made latitude at sea a routine measurement. Longitude remained unsolved until Harrison's chronometers, which is why the two problems are so often confused.

    DocumentedTechnology & computingPeriod: 1730

Common questions

Is 1730 a prime number?

No, 1730 is not prime.

What are the factors of 1730?

The factors of 1730 are 1, 2, 5, 10, 173, 346, 865, 1730.

What is 1730 in Roman numerals?

1730 in Roman numerals is MDCCXXX.

About this page's data

Mathematical facts:computed directly from the number's value — nothing to source or verify externally.

Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.

Last reviewed: 3 August 2026