1,305
1,305 is a composite number, odd, a calendar year.
Notable events — 1305 AD
- Aug 23 William Wallace is executed at Smithfield.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 1305
- Ended on
-
Thursday
December 31, 1305
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
1300s
1300–1309
- Century
-
14th century
1301–1400
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
721
721 years before 2026.
In other calendars
- Hebrew
-
5065 / 5066 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
704 / 705 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
-
1848 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
683 / 684 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1297 / 1298 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1227 / 1226 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 9
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 5,031
- Recamán's sequence
- a(30,438) = 1,305
- Square (n²)
- 1,703,025
- Cube (n³)
- 2,222,447,625
- Divisor count
- 12
- σ(n) — sum of divisors
- 2,340
- φ(n) — Euler's totient
- 672
- Sum of prime factors
- 40
Primality
Prime factorization: 3 2 × 5 × 29
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand three hundred five
- Ordinal
- 1305th
- Roman numeral
- MCCCV
- Binary
- 10100011001
- Octal
- 2431
- Hexadecimal
- 0x519
- Base64
- BRk=
- One's complement
- 64,230 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ατεʹ
- Mayan (base 20)
- 𝋣·𝋥·𝋥
- Chinese
- 一千三百零五
- Chinese (financial)
- 壹仟參佰零伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,305 = 1
- e — Euler's number (e)
- Digit 1,305 = 6
- φ — Golden ratio (φ)
- Digit 1,305 = 4
- √2 — Pythagoras's (√2)
- Digit 1,305 = 7
- ln 2 — Natural log of 2
- Digit 1,305 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,305 = 2
Also seen as
UTF-8 encoding: D4 99 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.25.
- Address
- 0.0.5.25
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.25
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1305 first appears in π at position 9,713 of the decimal expansion (the 9,713ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.