712
712 is a composite number, even, a calendar year.
Historical context — 712 AD
Calendar year
Year 712 (DCCXII) was a leap year starting on Friday of the Julian calendar, the 712th year of the Common Era (CE) and Anno Domini (AD) designations, the 712th year of the 1st millennium, the 12th year of the 8th century, and the 3rd year of the 710s decade.
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Historical context — 712 BC
Decade
This article concerns the period 719 BC – 710 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
-
Monday
January 1, 712
- Ended on
-
Tuesday
December 31, 712
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
710s
710–719
- Century
-
8th century
701–800
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,314
1314 years before 2026.
In other calendars
- Hebrew
-
4472 / 4473 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
93 / 94 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Rat
Sexagenary cycle position 49 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1255 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
90 / 91 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
704 / 705 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
634 / 633 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 3 × 89
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- seven hundred twelve
- Ordinal
- 712th
- Roman numeral
- DCCXII
- Binary
- 1011001000
- Octal
- 1310
- Hexadecimal
- 0x2C8
- Base64
- Asg=
- One's complement
- 64,823 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓏺𓏺
- Greek (Milesian)
- ψιβʹ
- Mayan (base 20)
- 𝋡·𝋯·𝋬
- Chinese
- 七百一十二
- Chinese (financial)
- 柒佰壹拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 712 = 2
- e — Euler's number (e)
- Digit 712 = 3
- φ — Golden ratio (φ)
- Digit 712 = 5
- √2 — Pythagoras's (√2)
- Digit 712 = 9
- ln 2 — Natural log of 2
- Digit 712 = 1
- γ — Euler-Mascheroni (γ)
- Digit 712 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 712, here are decompositions:
- 3 + 709 = 712
- 11 + 701 = 712
- 29 + 683 = 712
- 53 + 659 = 712
- 59 + 653 = 712
- 71 + 641 = 712
- 113 + 599 = 712
- 149 + 563 = 712
Showing the first eight; more decompositions exist.
UTF-8 encoding: CB 88 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.200.
- Address
- 0.0.2.200
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.2.200
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 712 is an active NANP area code (North American Numbering Plan).
- Primary area
- Sioux City / Council Bluffs
- Region
- Iowa
- Country
- United States
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.