1030
1030 megahertz is the aircraft transponder interrogation frequency.
- Even
- Composite
Where 1030 fits
Why 1030 is special
Ground radar asks on 1030 and aircraft answer on 1090, and that pairing is what makes secondary surveillance radar work.
1030 connects to:
- historical years — appears in
- 1090 — appears alongside
Same number, different meanings
How 1030 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Ground radar asks on 1030 and aircraft answer on 1090, and that pairing is what makes secondary surveillance radar work.
- History
In 1030, Olaf Haraldsson was killed at Stiklestad, and his cult made him Norway's patron saint (Norway).
- Technology & computing
Secondary surveillance radar interrogates aircraft transponders on 1030 MHz, with replies transmitted on 1090 MHz. The frequency pair is specified in ICAO Annex 10.
1030 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 5, 10, 103, 206, 515, 1030
- Prime factorisation
- 2 × 5 × 103
- Digit sum
- 4
- Digital root
- 4
Representations
- Decimal
- 1030
- Scientific notation
- 1.030 × 10^3
Roman numerals
M X X X
Binary
1 0 0 0 0 0 0 0 1 1 0
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 1 × 2 + 0 × 1 = 1,030
Octal
2 0 0 6
2 × 512 + 0 × 64 + 0 × 8 + 6 × 1 = 1,030
Hexadecimal
4 0 6
4 × 256 + 0 × 16 + 6 × 1 = 1,030
Read as powers of two: 1,024 + 4 + 2 = 1,030.
In historical numeral systems
Egyptian
1 lotus, 3 hobbles
1 × 1,000 + 3 × 10 = 1,030. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 7 vertical wedges (sixties place), 1 corner wedge (units place)
17 × 60 + 10 = 1030. 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
- Happy number
Related numbers & connections
1030 is a year in the 11th century, in the 1030s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
- appears alongside1090
why?
Strength 0.50, confidence "high".
History
In 1030, Olaf Haraldsson was killed at Stiklestad, and his cult made him Norway's patron saint (Norway).
DocumentedHistoryGeography: NorwayPeriod: 1030
Technology & computing
Secondary surveillance radar interrogates aircraft transponders on 1030 MHz, with replies transmitted on 1090 MHz. The frequency pair is specified in ICAO Annex 10.
DocumentedTechnology & computingGeography: International — ICAOPeriod: 1950s–
Common questions
Is 1030 a prime number?
No, 1030 is not prime.
What are the factors of 1030?
The factors of 1030 are 1, 2, 5, 10, 103, 206, 515, 1030.
What is 1030 in Roman numerals?
1030 in Roman numerals is MXXX.
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