100,918
100,918 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digital root
- 1
- Palindrome
- No
- Reversed
- 819,001
- Flips to (rotate 180°)
- 816,001
- Recamán's sequence
- a(254,880) = 100,918
- Divisor count
- 4
- σ(n) — sum of divisors
- 151,380
Primality
Prime factorization: 2 × 50459
Divisors & multiples
Representations
- In words
- one hundred thousand nine hundred eighteen
- Ordinal
- 100918th
- Binary
- 11000101000110110
- Octal
- 305066
- Hexadecimal
- 0x18A36
- Base64
- AYo2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 100918, here are decompositions:
- 5 + 100913 = 100918
- 11 + 100907 = 100918
- 71 + 100847 = 100918
- 89 + 100829 = 100918
- 107 + 100811 = 100918
- 131 + 100787 = 100918
- 149 + 100769 = 100918
- 269 + 100649 = 100918
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 98 A8 B6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.138.54.
- Address
- 0.1.138.54
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.138.54
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 100,918 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.