145,000
145,000 is a composite number, even.
145,000 (one hundred forty-five thousand) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2³ × 5⁴ × 29. Its proper divisors sum to 206,450, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x23668.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 541
- Recamán's sequence
- a(218,416) = 145,000
- Square (n²)
- 21,025,000,000
- Cube (n³)
- 3,048,625,000,000,000
- Divisor count
- 40
- σ(n) — sum of divisors
- 351,450
- φ(n) — Euler's totient
- 56,000
- Sum of prime factors
- 55
Primality
Prime factorization: 2 3 × 5 4 × 29
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√145,000 = [380; (1, 3, 1, 2, 1, 2, 1, 1, 1, 5, 3, 1, 2, 2, 2, 1, 6, 1, 9, 1, 5, 1, 20, 3, …)]
Representations
- In words
- one hundred forty-five thousand
- Ordinal
- 145000th
- Binary
- 100011011001101000
- Octal
- 433150
- Hexadecimal
- 0x23668
- Base64
- AjZo
- One's complement
- 4,294,822,295 (32-bit)
- Scientific notation
- 1.45 × 10⁵
- As a duration
- 145,000 s = 1 day, 16 hours, 16 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼
- Greek (Milesian)
- ͵ρμε
- Mayan (base 20)
- 𝋲·𝋢·𝋪·𝋠
- Chinese
- 一十四萬五千
- Chinese (financial)
- 壹拾肆萬伍仟
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 145000, here are decompositions:
- 17 + 144983 = 145000
- 59 + 144941 = 145000
- 83 + 144917 = 145000
- 101 + 144899 = 145000
- 113 + 144887 = 145000
- 227 + 144773 = 145000
- 263 + 144737 = 145000
- 269 + 144731 = 145000
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A3 99 A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.54.104.
- Address
- 0.2.54.104
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.54.104
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 145,000 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 145000 first appears in π at position 209,774 of the decimal expansion (the 209,774ordinal-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.