13,000
13,000 is a composite number, even.
Properties
Primality
Prime factorization: 2 3 × 5 3 × 13
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirteen thousand
- Ordinal
- 13000th
- Binary
- 11001011001000
- Octal
- 31310
- Hexadecimal
- 0x32C8
- Base64
- Msg=
- One's complement
- 52,535 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼
- Greek (Milesian)
- ͵ιγ
- Mayan (base 20)
- 𝋡·𝋬·𝋪·𝋠
- Chinese
- 一萬三千
- Chinese (financial)
- 壹萬參仟
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,000 = 9
- e — Euler's number (e)
- Digit 13,000 = 2
- φ — Golden ratio (φ)
- Digit 13,000 = 4
- √2 — Pythagoras's (√2)
- Digit 13,000 = 1
- ln 2 — Natural log of 2
- Digit 13,000 = 6
- γ — Euler-Mascheroni (γ)
- Digit 13,000 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13000, here are decompositions:
- 17 + 12983 = 13000
- 41 + 12959 = 13000
- 47 + 12953 = 13000
- 59 + 12941 = 13000
- 83 + 12917 = 13000
- 89 + 12911 = 13000
- 101 + 12899 = 13000
- 107 + 12893 = 13000
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 8B 88 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.200.
- Address
- 0.0.50.200
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.200
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 13000 first appears in π at position 198,968 of the decimal expansion (the 198,968ordinal-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.