133,391
133,391 is a prime, odd.
133,391 (one hundred thirty-three thousand three hundred ninety-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x2090F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 243
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 193,331
- Recamán's sequence
- a(35,442) = 133,391
- Square (n²)
- 17,793,158,881
- Cube (n³)
- 2,373,447,256,295,471
- Divisor count
- 2
- σ(n) — sum of divisors
- 133,392
- φ(n) — Euler's totient
- 133,390
Primality
133,391 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√133,391 = [365; (4, 2, 1, 1, 37, 1, 5, 1, 5, 1, 3, 1, 1, 1, 2, 6, 1, 5, 1, 5, 7, 1, 1, 13, …)]
Representations
- In words
- one hundred thirty-three thousand three hundred ninety-one
- Ordinal
- 133391st
- Binary
- 100000100100001111
- Octal
- 404417
- Hexadecimal
- 0x2090F
- Base64
- AgkP
- One's complement
- 4,294,833,904 (32-bit)
- Scientific notation
- 1.33391 × 10⁵
- As a duration
- 133,391 s = 1 day, 13 hours, 3 minutes, 11 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹 𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλγτϟαʹ
- Mayan (base 20)
- 𝋰·𝋭·𝋩·𝋫
- Chinese
- 一十三萬三千三百九十一
- Chinese (financial)
- 壹拾參萬參仟參佰玖拾壹
Also seen as
UTF-8 encoding: F0 A0 A4 8F (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.9.15.
- Address
- 0.2.9.15
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.9.15
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 133,391 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 133391 first appears in π at position 239,780 of the decimal expansion (the 239,780ordinal-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.