100,972
100,972 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digital root
- 1
- Palindrome
- No
- Reversed
- 279,001
- Divisor count
- 6
- σ(n) — sum of divisors
- 176,708
Primality
Prime factorization: 2 2 × 25243
Divisors & multiples
Representations
- In words
- one hundred thousand nine hundred seventy-two
- Ordinal
- 100972nd
- Binary
- 11000101001101100
- Octal
- 305154
- Hexadecimal
- 0x18A6C
- Base64
- AYps
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 100972, here are decompositions:
- 29 + 100943 = 100972
- 41 + 100931 = 100972
- 59 + 100913 = 100972
- 149 + 100823 = 100972
- 173 + 100799 = 100972
- 239 + 100733 = 100972
- 269 + 100703 = 100972
- 359 + 100613 = 100972
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 98 A9 AC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.138.108.
- Address
- 0.1.138.108
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.138.108
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 100,972 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.