13,345
13,345 is a composite number, odd.
13,345 (thirteen thousand three hundred forty-five) is an odd 5-digit number. It is a composite number with 8 divisors, and factors as 5 × 17 × 157. Written other ways, in hexadecimal, 0x3421.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 16
- Digit product
- 180
- Digital root
- 7
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 54,331
- Recamán's sequence
- a(47,585) = 13,345
- Square (n²)
- 178,089,025
- Cube (n³)
- 2,376,598,038,625
- Divisor count
- 8
- σ(n) — sum of divisors
- 17,064
- φ(n) — Euler's totient
- 9,984
- Sum of prime factors
- 179
Primality
Prime factorization: 5 × 17 × 157
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,345 = [115; (1, 1, 11, 1, 1, 1, 13, 1, 3, 1, 1, 2, 25, 3, 1, 1, 3, 25, 2, 1, 1, 3, 1, 13, …)]
Period length 31 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand three hundred forty-five
- Ordinal
- 13345th
- Binary
- 11010000100001
- Octal
- 32041
- Hexadecimal
- 0x3421
- Base64
- NCE=
- One's complement
- 52,190 (16-bit)
- Scientific notation
- 1.3345 × 10⁴
- As a duration
- 13,345 s = 3 hours, 42 minutes, 25 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγτμεʹ
- Mayan (base 20)
- 𝋡·𝋭·𝋧·𝋥
- Chinese
- 一萬三千三百四十五
- Chinese (financial)
- 壹萬參仟參佰肆拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,345 = 8
- e — Euler's number (e)
- Digit 13,345 = 1
- φ — Golden ratio (φ)
- Digit 13,345 = 5
- √2 — Pythagoras's (√2)
- Digit 13,345 = 2
- ln 2 — Natural log of 2
- Digit 13,345 = 6
- γ — Euler-Mascheroni (γ)
- Digit 13,345 = 1
Also seen as
UTF-8 encoding: E3 90 A1 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.33.
- Address
- 0.0.52.33
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.52.33
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,345 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, +7¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, +45¢ — about midway to A9)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, +8¢)
The digit sequence 13345 first appears in π at position 160,669 of the decimal expansion (the 160,669ordinal-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.