129,988
129,988 is a composite number, even.
129,988 (one hundred twenty-nine thousand nine hundred eighty-eight) is an even 6-digit number. It is a composite number with 6 divisors, and factors as 2² × 32,497. Written other ways, in hexadecimal, 0x1FBC4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 37
- Digit product
- 10,368
- Digital root
- 1
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 889,921
- Recamán's sequence
- a(33,732) = 129,988
- Square (n²)
- 16,896,880,144
- Cube (n³)
- 2,196,391,656,158,272
- Divisor count
- 6
- σ(n) — sum of divisors
- 227,486
- φ(n) — Euler's totient
- 64,992
- Sum of prime factors
- 32,501
Primality
Prime factorization: 2 2 × 32497
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√129,988 = [360; (1, 1, 5, 1, 239, 1, 1, 18, 1, 79, 5, 1, 5, 1, 1, 1, 26, 17, 1, 1, 4, 1, 1, 8, …)]
Representations
- In words
- one hundred twenty-nine thousand nine hundred eighty-eight
- Ordinal
- 129988th
- Binary
- 11111101111000100
- Octal
- 375704
- Hexadecimal
- 0x1FBC4
- Base64
- AfvE
- One's complement
- 4,294,837,307 (32-bit)
- Scientific notation
- 1.29988 × 10⁵
- As a duration
- 129,988 s = 1 day, 12 hours, 6 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρκθϡπηʹ
- Mayan (base 20)
- 𝋰·𝋤·𝋳·𝋨
- Chinese
- 一十二萬九千九百八十八
- Chinese (financial)
- 壹拾貳萬玖仟玖佰捌拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 129988, here are decompositions:
- 17 + 129971 = 129988
- 29 + 129959 = 129988
- 71 + 129917 = 129988
- 101 + 129887 = 129988
- 239 + 129749 = 129988
- 251 + 129737 = 129988
- 269 + 129719 = 129988
- 281 + 129707 = 129988
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 9F AF 84 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.251.196.
- Address
- 0.1.251.196
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.251.196
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 129,988 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 129988 first appears in π at position 52,826 of the decimal expansion (the 52,826ordinal-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.