138,101
138,101 is a prime, odd.
138,101 (one hundred thirty-eight thousand one hundred one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x21B75.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 101,831
- Recamán's sequence
- a(492,625) = 138,101
- Square (n²)
- 19,071,886,201
- Cube (n³)
- 2,633,846,556,244,301
- Divisor count
- 2
- σ(n) — sum of divisors
- 138,102
- φ(n) — Euler's totient
- 138,100
Primality
138,101 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,101 = [371; (1, 1, 1, 1, 1, 2, 5, 1, 1, 3, 2, 1, 6, 1, 1, 11, 1, 1, 1, 5, 1, 4, 7, 4, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred one
- Ordinal
- 138101st
- Binary
- 100001101101110101
- Octal
- 415565
- Hexadecimal
- 0x21B75
- Base64
- Aht1
- One's complement
- 4,294,829,194 (32-bit)
- Scientific notation
- 1.38101 × 10⁵
- As a duration
- 138,101 s = 1 day, 14 hours, 21 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓏺
- Greek (Milesian)
- ͵ρληραʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋥·𝋡
- Chinese
- 一十三萬八千一百零一
- Chinese (financial)
- 壹拾參萬捌仟壹佰零壹
Also seen as
UTF-8 encoding: F0 A1 AD B5 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.117.
- Address
- 0.2.27.117
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.117
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 138,101 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 138101 first appears in π at position 266,306 of the decimal expansion (the 266,306ordinal-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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.