1,549
1,549 is a prime, odd, a calendar year.
1,549 (one thousand five hundred forty-nine) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in Roman numerals it is MDXLIX and in binary, 11000001101.
Interestingness
Notable events — 1549 AD
- Jan 21 The Act of Uniformity introduces the first Book of Common Prayer in England.
- Aug 15 Francis Xavier arrives in Japan to launch Catholic missions there.
- Jul 6 Kett's Rebellion erupts in Norfolk.
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
- 52
- Started on
-
Saturday
January 1, 1549
- Ended on
-
Saturday
December 31, 1549
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1540s
1540–1549
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
477
477 years before 2026.
In other calendars
- Hebrew
-
5309 / 5310 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
955 / 956 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Rooster
Sexagenary cycle position 46 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2092 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
927 / 928 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1541 / 1542 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1471 / 1470 Saka
Indian national calendar; year starts in March.
Properties
Primality
1,549 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,549 = [39; (2, 1, 3, 1, 25, 2, 4, 1, 3, 8, 2, 15, 3, 1, 2, 6, 5, 11, 19, 1, 1, 2, 3, 2, …)]
Representations
- In words
- one thousand five hundred forty-nine
- Ordinal
- 1549th
- Roman numeral
- MDXLIX
- Binary
- 11000001101
- Octal
- 3015
- Hexadecimal
- 0x60D
- Base64
- Bg0=
- One's complement
- 63,986 (16-bit)
- Scientific notation
- 1.549 × 10³
- As a duration
- 1,549 s = 25 minutes, 49 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αφμθʹ
- Mayan (base 20)
- 𝋣·𝋱·𝋩
- Chinese
- 一千五百四十九
- Chinese (financial)
- 壹仟伍佰肆拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,549 = 3
- e — Euler's number (e)
- Digit 1,549 = 8
- φ — Golden ratio (φ)
- Digit 1,549 = 5
- √2 — Pythagoras's (√2)
- Digit 1,549 = 9
- ln 2 — Natural log of 2
- Digit 1,549 = 7
- γ — Euler-Mascheroni (γ)
- Digit 1,549 = 6
Also seen as
UTF-8 encoding: D8 8D (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.13.
- Address
- 0.0.6.13
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.13
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,549 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G6 (1568 Hz, -21¢)
- Scientific pitch (C4 = 256 Hz): G6 (1534.3 Hz, +17¢)
- Baroque pitch (A4 = 415 Hz): G♯6 (1566.8 Hz, -20¢)
The digit sequence 1549 first appears in π at position 26,816 of the decimal expansion (the 26,816ordinal-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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.