1,429
1,429 is a prime, odd, a calendar year.
1,429 (one thousand four hundred twenty-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 MCDXXIX and in binary, 10110010101.
Interestingness
Notable events — 1429 AD
- May 8 Joan of Arc lifts the English siege of Orléans.
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, 1429
- Ended on
-
Thursday
December 31, 1429
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
1420s
1420–1429
- Century
-
15th century
1401–1500
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
597
597 years before 2026.
In other calendars
- Hebrew
-
5189 / 5190 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
832 / 833 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
-
1972 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
807 / 808 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1421 / 1422 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1351 / 1350 Saka
Indian national calendar; year starts in March.
Properties
Primality
1,429 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,429 = [37; (1, 4, 18, 1, 2, 2, 1, 18, 4, 1, 74)]
Period length 11 — the block in parentheses repeats forever.
Representations
- In words
- one thousand four hundred twenty-nine
- Ordinal
- 1429th
- Roman numeral
- MCDXXIX
- Binary
- 10110010101
- Octal
- 2625
- Hexadecimal
- 0x595
- Base64
- BZU=
- One's complement
- 64,106 (16-bit)
- Scientific notation
- 1.429 × 10³
- As a duration
- 1,429 s = 23 minutes, 49 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αυκθʹ
- Mayan (base 20)
- 𝋣·𝋫·𝋩
- Chinese
- 一千四百二十九
- Chinese (financial)
- 壹仟肆佰貳拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,429 = 9
- e — Euler's number (e)
- Digit 1,429 = 5
- φ — Golden ratio (φ)
- Digit 1,429 = 2
- √2 — Pythagoras's (√2)
- Digit 1,429 = 4
- ln 2 — Natural log of 2
- Digit 1,429 = 4
- γ — Euler-Mascheroni (γ)
- Digit 1,429 = 4
Also seen as
UTF-8 encoding: D6 95 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.149.
- Address
- 0.0.5.149
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.5.149
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 1,429 Hz is closest to:
- Concert pitch (A4 = 440 Hz): F6 (1396.9 Hz, +39¢)
- Scientific pitch (C4 = 256 Hz): F♯6 (1448.2 Hz, -23¢)
- Baroque pitch (A4 = 415 Hz): F♯6 (1395.9 Hz, +41¢)
The digit sequence 1429 first appears in π at position 2,121 of the decimal expansion (the 2,121ordinal-suffix:st 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.