13,421
13,421 is a prime, odd.
13,421 (thirteen thousand four hundred twenty-one) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x346D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 11
- Digit product
- 24
- Digital root
- 2
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 12,431
- Recamán's sequence
- a(47,433) = 13,421
- Square (n²)
- 180,123,241
- Cube (n³)
- 2,417,434,017,461
- Divisor count
- 2
- σ(n) — sum of divisors
- 13,422
- φ(n) — Euler's totient
- 13,420
Primality
13,421 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,421 = [115; (1, 5, 1, 1, 1, 1, 1, 20, 2, 3, 1, 2, 1, 1, 1, 2, 2, 1, 2, 45, 1, 32, 8, 4, …)]
Representations
- In words
- thirteen thousand four hundred twenty-one
- Ordinal
- 13421st
- Binary
- 11010001101101
- Octal
- 32155
- Hexadecimal
- 0x346D
- Base64
- NG0=
- One's complement
- 52,114 (16-bit)
- Scientific notation
- 1.3421 × 10⁴
- As a duration
- 13,421 s = 3 hours, 43 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ιγυκαʹ
- Mayan (base 20)
- 𝋡·𝋭·𝋫·𝋡
- Chinese
- 一萬三千四百二十一
- Chinese (financial)
- 壹萬參仟肆佰貳拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,421 = 2
- e — Euler's number (e)
- Digit 13,421 = 4
- φ — Golden ratio (φ)
- Digit 13,421 = 6
- √2 — Pythagoras's (√2)
- Digit 13,421 = 3
- ln 2 — Natural log of 2
- Digit 13,421 = 7
- γ — Euler-Mascheroni (γ)
- Digit 13,421 = 6
Also seen as
UTF-8 encoding: E3 91 AD (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.109.
- Address
- 0.0.52.109
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.52.109
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,421 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, +17¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, -45¢ — about midway to G♯9)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, +18¢)
The digit sequence 13421 first appears in π at position 16,639 of the decimal expansion (the 16,639ordinal-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.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.