Numberwise

1898

1898 is the year radium and polonium were discovered.

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Where 1898 fits

Where 1898 fits: Mathematics, History, Related numbersMathematics: Harshad (Niven) number. History: Historical years. Related numbers: 1901.MathematicsHarshad (Niven) numberHistoryHistorical yearsRelated numbers19011898
1898 connects to 3 worlds: mathematics, history, related numbers.

Why 1898 is special

Marie and Pierre Curie isolated them from pitchblende, processing tonnes of ore by hand. Marie Curie remains the only person to win Nobel Prizes in two different sciences, and her notebooks are still radioactive enough to require protective equipment.

1898 is part of

Numbers around us

Factors & digit properties

Divisors (8)
1, 2, 13, 26, 73, 146, 949, 1898
Prime factorisation
2 × 13 × 73
Digit sum
26
Digital root
8

Representations

Decimal
1898
Scientific notation
1.898 × 10^3

Roman numerals

M D C C C X C V I I I

MDCCCXCVIII uses the subtractive pair XC: ten before a hundred — a hundred minus ten.

Binary

1 1 1 0 1 1 0 1 0 1 0

1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 1,898

Octal

3 5 5 2

3 × 512 + 5 × 64 + 5 × 8 + 2 × 1 = 1,898

Hexadecimal

7 6 a

7 × 256 + 6 × 16 + a × 1 = 1,898

Read as powers of two: 1,024 + 512 + 256 + 64 + 32 + 8 + 2 = 1,898.

In historical numeral systems

Egyptian

1 lotus, 8 coils of rope, 9 hobbles, 8 strokes

1 × 1,000 + 8 × 100 + 9 × 10 + 8 × 1 = 1,898. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.

Babylonian

3 corner wedges + 1 vertical wedge (sixties place), 3 corner wedges + 8 vertical wedges (units place)

31 × 60 + 38 = 1898. Places are separated by a space on the tablet, with the higher place written first.

Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.

Other mathematical patterns

  • Deficient number
  • Harshad (Niven) number

Related numbers & connections

Documented appearance
1898 is a year in the 19th century, in the 1890s.

1898 is a year in the 19th century, in the 1890s.

Numbers Around Us

  • appears inHistorical years
    why?

    Strength 0.50, confidence "high".

  • appears alongside1901
    why?

    Strength 0.50, confidence "high".

How is 1898 connected to another number? →

Science

  • In 1898, Marie and Pierre Curie isolated polonium and radium (France).

    DocumentedScienceGeography: FrancePeriod: 1898

  • The Curies isolated polonium and radium by processing tonnes of pitchblende by hand. Marie Curie remains the only person to win Nobel Prizes in two different sciences, and her laboratory notebooks require protective equipment to consult.

    DocumentedSciencePeriod: 1898

Common questions

Is 1898 a prime number?

No, 1898 is not prime.

What are the factors of 1898?

The factors of 1898 are 1, 2, 13, 26, 73, 146, 949, 1898.

What is 1898 in Roman numerals?

1898 in Roman numerals is MDCCCXCVIII. XC is subtractive: ten before a hundred — a hundred minus ten. Written additively it would be MDCCCLXXXXVIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.

About this page's data

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

Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.

Last reviewed: 15 July 2026