136
136 is a composite number, even, a calendar year.
136 (one hundred thirty-six) is an even 3-digit number. It is a composite number with 8 divisors, and factors as 2³ × 17. It is the sixteenth triangular number. Written other ways, in Roman numerals it is CXXXVI and in binary, 10001000.
Interestingness
Historical context — 136 AD
Calendar year
Year 136 (CXXXVI) was a leap year starting on Saturday of the Julian calendar, the 136th Year of the Common Era (CE) and Anno Domini (AD) designations, the 136th year of the 1st millennium, the 36th year of the 2nd century, and the 7th year of the 130s decade.
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Historical context — 136 BC
Calendar year
Year 136 BC was a year of the pre-Julian Roman calendar.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Sunday
January 1, 136
- Ended on
-
Monday
December 31, 136
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
130s
130–139
- Century
-
2nd century
101–200
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,890
1890 years before 2026.
In other calendars
- Hebrew
-
3896 / 3897 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Fire zodiac:Rat
Sexagenary cycle position 13 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
679 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
128 / 129 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
58 / 57 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 3 × 17
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√136 = [11; (1, 1, 1, 22)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-six
- Ordinal
- 136th
- Roman numeral
- CXXXVI
- Binary
- 10001000
- Octal
- 210
- Hexadecimal
- 0x88
- Base64
- iA==
- One's complement
- 119 (8-bit)
- Scientific notation
- 1.36 × 10²
- As a duration
- 136 s = 2 minutes, 16 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ρλϛʹ
- Mayan (base 20)
- 𝋦·𝋰
- Chinese
- 一百三十六
- Chinese (financial)
- 壹佰參拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 136 = 2
- e — Euler's number (e)
- Digit 136 = 3
- φ — Golden ratio (φ)
- Digit 136 = 6
- √2 — Pythagoras's (√2)
- Digit 136 = 7
- ln 2 — Natural log of 2
- Digit 136 = 0
- γ — Euler-Mascheroni (γ)
- Digit 136 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 136, here are decompositions:
- 5 + 131 = 136
- 23 + 113 = 136
- 29 + 107 = 136
- 47 + 89 = 136
- 53 + 83 = 136
UTF-8 encoding: C2 88 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.136.
- Address
- 0.0.0.136
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.0.136
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 136 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯3 (138.6 Hz, -33¢)
- Scientific pitch (C4 = 256 Hz): C♯3 (135.6 Hz, +5¢)
- Baroque pitch (A4 = 415 Hz): D3 (138.5 Hz, -31¢)
Related reading
- Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.