1,375
1,375 is a composite number, odd, a calendar year.
1,375 (one thousand three hundred seventy-five) is an odd 4-digit number. It is a composite number with 8 divisors, and factors as 5³ × 11. Written other ways, in Roman numerals it is MCCCLXXV and in binary, 10101011111.
Interestingness
Historical context — 1375 AD
Calendar year
Year 1375 (MCCCLXXV) was a common year starting on Monday of the Julian calendar.
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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
-
Sunday
January 1, 1375
- Ended on
-
Sunday
December 31, 1375
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
1370s
1370–1379
- Century
-
14th century
1301–1400
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
651
651 years before 2026.
In other calendars
- Hebrew
-
5135 / 5136 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
776 / 777 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Wood zodiac:Rabbit
Sexagenary cycle position 52 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1918 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
753 / 754 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1367 / 1368 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1297 / 1296 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 5 3 × 11
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,375 = [37; (12, 2, 1, 7, 1, 1, 3, 2, 1, 2, 6, 2, 1, 2, 3, 1, 1, 7, 1, 2, 12, 74)]
Period length 22 — the block in parentheses repeats forever.
Representations
- In words
- one thousand three hundred seventy-five
- Ordinal
- 1375th
- Roman numeral
- MCCCLXXV
- Binary
- 10101011111
- Octal
- 2537
- Hexadecimal
- 0x55F
- Base64
- BV8=
- One's complement
- 64,160 (16-bit)
- Scientific notation
- 1.375 × 10³
- As a duration
- 1,375 s = 22 minutes, 55 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ατοεʹ
- Mayan (base 20)
- 𝋣·𝋨·𝋯
- Chinese
- 一千三百七十五
- Chinese (financial)
- 壹仟參佰柒拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,375 = 6
- e — Euler's number (e)
- Digit 1,375 = 7
- φ — Golden ratio (φ)
- Digit 1,375 = 6
- √2 — Pythagoras's (√2)
- Digit 1,375 = 3
- ln 2 — Natural log of 2
- Digit 1,375 = 1
- γ — Euler-Mascheroni (γ)
- Digit 1,375 = 0
Also seen as
UTF-8 encoding: D5 9F (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.95.
- Address
- 0.0.5.95
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.95
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,375 Hz is closest to:
- Concert pitch (A4 = 440 Hz): F6 (1396.9 Hz, -27¢)
- Scientific pitch (C4 = 256 Hz): F6 (1366.9 Hz, +10¢)
- Baroque pitch (A4 = 415 Hz): F♯6 (1395.9 Hz, -26¢)
The digit sequence 1375 first appears in π at position 4,612 of the decimal expansion (the 4,612ordinal-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.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.