945
945 is a composite number, odd, a calendar year.
Historical context — 945 AD
Calendar year
Year 945 (CMXLV) was a common year starting on Wednesday of the Julian calendar.
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Historical context — 945 BC
Decade
The 940s BC is a decade that lasted from 949 BC to 940 BC.
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Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
- 52
- Started on
-
Friday
January 1, 945
- Ended on
-
Friday
December 31, 945
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
940s
940–949
- Century
-
10th century
901–1000
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,081
1081 years before 2026.
In other calendars
- Hebrew
-
4705 / 4706 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
333 / 334 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Wood zodiac:Snake
Sexagenary cycle position 42 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1488 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
323 / 324 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
937 / 938 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
867 / 866 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 3 3 × 5 × 7
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- nine hundred forty-five
- Ordinal
- 945th
- Roman numeral
- CMXLV
- Binary
- 1110110001
- Octal
- 1661
- Hexadecimal
- 0x3B1
- Base64
- A7E=
- One's complement
- 64,590 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ϡμεʹ
- Mayan (base 20)
- 𝋢·𝋧·𝋥
- Chinese
- 九百四十五
- Chinese (financial)
- 玖佰肆拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 945 = 5
- e — Euler's number (e)
- Digit 945 = 8
- φ — Golden ratio (φ)
- Digit 945 = 7
- √2 — Pythagoras's (√2)
- Digit 945 = 3
- ln 2 — Natural log of 2
- Digit 945 = 1
- γ — Euler-Mascheroni (γ)
- Digit 945 = 9
Also seen as
UTF-8 encoding: CE B1 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.177.
- Address
- 0.0.3.177
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.177
Unspecified address (0.0.0.0/8) — "this network" placeholder.
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.