155,998
155,998 is a composite number, even.
155,998 (one hundred fifty-five thousand nine hundred ninety-eight) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 77,999. Written other ways, in hexadecimal, 0x2615E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 37
- Digit product
- 16,200
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 899,551
- Recamán's sequence
- a(205,868) = 155,998
- Square (n²)
- 24,335,376,004
- Cube (n³)
- 3,796,269,985,871,992
- Divisor count
- 4
- σ(n) — sum of divisors
- 234,000
- φ(n) — Euler's totient
- 77,998
- Sum of prime factors
- 78,001
Primality
Prime factorization: 2 × 77999
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√155,998 = [394; (1, 28, 3, 1, 7, 14, 2, 394, 2, 14, 7, 1, 3, 28, 1, 788)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred fifty-five thousand nine hundred ninety-eight
- Ordinal
- 155998th
- Binary
- 100110000101011110
- Octal
- 460536
- Hexadecimal
- 0x2615E
- Base64
- AmFe
- One's complement
- 4,294,811,297 (32-bit)
- Scientific notation
- 1.55998 × 10⁵
- As a duration
- 155,998 s = 1 day, 19 hours, 19 minutes, 58 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρνεϡϟηʹ
- Mayan (base 20)
- 𝋳·𝋩·𝋳·𝋲
- Chinese
- 一十五萬五千九百九十八
- Chinese (financial)
- 壹拾伍萬伍仟玖佰玖拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 155998, here are decompositions:
- 107 + 155891 = 155998
- 137 + 155861 = 155998
- 149 + 155849 = 155998
- 197 + 155801 = 155998
- 251 + 155747 = 155998
- 257 + 155741 = 155998
- 281 + 155717 = 155998
- 389 + 155609 = 155998
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A6 85 9E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.97.94.
- Address
- 0.2.97.94
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.97.94
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 155,998 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 155998 first appears in π at position 656,751 of the decimal expansion (the 656,751ordinal-suffix:st 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.