101,980
101,980 is a composite number, even.
101,980 (one hundred one thousand nine hundred eighty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 5,099. Its proper divisors sum to 112,220, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x18E5C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 89,101
- Flips to (rotate 180°)
- 86,101
- Square (n²)
- 10,399,920,400
- Cube (n³)
- 1,060,583,882,392,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 214,200
- φ(n) — Euler's totient
- 40,784
- Sum of prime factors
- 5,108
Primality
Prime factorization: 2 2 × 5 × 5099
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√101,980 = [319; (2, 1, 10, 1, 2, 1, 4, 1, 1, 2, 1, 2, 2, 5, 1, 1, 1, 17, 10, 1, 3, 3, 8, 10, …)]
Representations
- In words
- one hundred one thousand nine hundred eighty
- Ordinal
- 101980th
- Binary
- 11000111001011100
- Octal
- 307134
- Hexadecimal
- 0x18E5C
- Base64
- AY5c
- One's complement
- 4,294,865,315 (32-bit)
- Scientific notation
- 1.0198 × 10⁵
- As a duration
- 101,980 s = 1 day, 4 hours, 19 minutes, 40 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ραϡπʹ
- Mayan (base 20)
- 𝋬·𝋮·𝋳·𝋠
- Chinese
- 一十萬一千九百八十
- Chinese (financial)
- 壹拾萬壹仟玖佰捌拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 101980, here are decompositions:
- 3 + 101977 = 101980
- 17 + 101963 = 101980
- 23 + 101957 = 101980
- 41 + 101939 = 101980
- 59 + 101921 = 101980
- 89 + 101891 = 101980
- 101 + 101879 = 101980
- 107 + 101873 = 101980
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.142.92.
- Address
- 0.1.142.92
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.142.92
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 101,980 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 101980 first appears in π at position 124,108 of the decimal expansion (the 124,108ordinal-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.