988
988 is a composite number, even, a calendar year.
Historical context — 988 AD
Calendar year
Year 988 (CMLXXXVIII) was a leap year starting on Sunday of the Julian calendar.
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Historical context — 988 BC
Decade
The 980s BC is a decade that lasted from 989 BC to 980 BC.
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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
-
Tuesday
January 1, 988
- Ended on
-
Wednesday
December 31, 988
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
980s
980–989
- Century
-
10th century
901–1000
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,038
1038 years before 2026.
In other calendars
- Hebrew
-
4748 / 4749 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
377 / 378 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Rat
Sexagenary cycle position 25 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1531 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
366 / 367 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
980 / 981 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
910 / 909 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 25
- Digit product
- 576
- Digital root
- 7
- Palindrome
- No
- Bit width
- 10 bits
- Reversed
- 889
- Flips to (rotate 180°)
- 886
- Recamán's sequence
- a(4,443) = 988
- Square (n²)
- 976,144
- Cube (n³)
- 964,430,272
- Divisor count
- 12
- σ(n) — sum of divisors
- 1,960
- φ(n) — Euler's totient
- 432
- Sum of prime factors
- 36
Primality
Prime factorization: 2 2 × 13 × 19
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- nine hundred eighty-eight
- Ordinal
- 988th
- Roman numeral
- CMLXXXVIII
- Binary
- 1111011100
- Octal
- 1734
- Hexadecimal
- 0x3DC
- Base64
- A9w=
- One's complement
- 64,547 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ϡπηʹ
- Mayan (base 20)
- 𝋢·𝋩·𝋨
- Chinese
- 九百八十八
- Chinese (financial)
- 玖佰捌拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 988 = 5
- e — Euler's number (e)
- Digit 988 = 4
- φ — Golden ratio (φ)
- Digit 988 = 7
- √2 — Pythagoras's (√2)
- Digit 988 = 2
- ln 2 — Natural log of 2
- Digit 988 = 4
- γ — Euler-Mascheroni (γ)
- Digit 988 = 3
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 988, here are decompositions:
- 5 + 983 = 988
- 11 + 977 = 988
- 17 + 971 = 988
- 41 + 947 = 988
- 47 + 941 = 988
- 59 + 929 = 988
- 101 + 887 = 988
- 107 + 881 = 988
Showing the first eight; more decompositions exist.
UTF-8 encoding: CF 9C (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.220.
- Address
- 0.0.3.220
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.220
Unspecified address (0.0.0.0/8) — "this network" placeholder.