8085
The Intel 8085 needed only a single power supply.
- Odd
- Composite
Where 8085 fits
Why 8085 is special
Its predecessor the 8080 required three separate voltages, which made every board around it more complex and expensive. Consolidating to one 5-volt supply is unglamorous and it is what made the chip practical for small products.
Factors & digit properties
- Divisors (24)
- 1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2695, 8085
- Prime factorisation
- 3 × 5 × 7^2 × 11
- Digit sum
- 21
- Digital root
- 3
Representations
- Decimal
- 8085
- Scientific notation
- 8.085 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 1 1 1 1 0 0 1 0 1 0 1
1 × 4,096 + 1 × 2,048 + 1 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 8,085
Octal
1 7 6 2 5
1 × 4,096 + 7 × 512 + 6 × 64 + 2 × 8 + 5 × 1 = 8,085
Hexadecimal
1 f 9 5
1 × 4,096 + f × 256 + 9 × 16 + 5 × 1 = 8,085
Read as powers of two: 4,096 + 2,048 + 1,024 + 512 + 256 + 128 + 16 + 4 + 1 = 8,085.
In historical numeral systems
Egyptian
8 lotuses, 8 hobbles, 5 strokes
8 × 1,000 + 8 × 10 + 5 × 1 = 8,085. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
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
- Abundant number
- Harshad (Niven) number
- Lucky number (mathematical sieve)
Related numbers & connections
The 8008 established the instruction lineage and the 8085 consolidated it onto a single power supply, which mattered commercially more than any instruction change.
View 8008 →Other connections
- developed from8008
why?
Strength 0.50, confidence "high".
Technology & computing
The 8085's advance over the 8080 was requiring a single 5-volt supply rather than three. Removing two power rails from every design built around it mattered more commercially than any instruction-set change.
DocumentedTechnology & computingPeriod: 1976
Common questions
Is 8085 a prime number?
No, 8085 is not prime.
What are the factors of 8085?
The factors of 8085 are 1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2695, 8085.
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: 15 July 2026