155,148
155,148 is a composite number, even.
155,148 (one hundred fifty-five thousand one hundred forty-eight) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2² × 3 × 7 × 1,847. Its proper divisors sum to 258,804, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x25E0C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 800
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 841,551
- Recamán's sequence
- a(477,823) = 155,148
- Square (n²)
- 24,070,901,904
- Cube (n³)
- 3,734,552,288,601,792
- Divisor count
- 24
- σ(n) — sum of divisors
- 413,952
- φ(n) — Euler's totient
- 44,304
- Sum of prime factors
- 1,861
Primality
Prime factorization: 2 2 × 3 × 7 × 1847
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√155,148 = [393; (1, 7, 1, 20, 2, 2, 16, 2, 1, 3, 1, 1, 1, 1, 4, 2, 1, 8, 1, 2, 4, 1, 1, 1, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one hundred fifty-five thousand one hundred forty-eight
- Ordinal
- 155148th
- Binary
- 100101111000001100
- Octal
- 457014
- Hexadecimal
- 0x25E0C
- Base64
- Al4M
- One's complement
- 4,294,812,147 (32-bit)
- Scientific notation
- 1.55148 × 10⁵
- As a duration
- 155,148 s = 1 day, 19 hours, 5 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρνερμηʹ
- Mayan (base 20)
- 𝋳·𝋧·𝋱·𝋨
- Chinese
- 一十五萬五千一百四十八
- Chinese (financial)
- 壹拾伍萬伍仟壹佰肆拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 155148, here are decompositions:
- 11 + 155137 = 155148
- 29 + 155119 = 155148
- 61 + 155087 = 155148
- 67 + 155081 = 155148
- 79 + 155069 = 155148
- 101 + 155047 = 155148
- 131 + 155017 = 155148
- 139 + 155009 = 155148
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A5 B8 8C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.94.12.
- Address
- 0.2.94.12
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.94.12
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 155,148 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 155148 first appears in π at position 764,923 of the decimal expansion (the 764,923ordinal-suffix:rd 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.