148,721
148,721 is a prime, odd.
148,721 (one hundred forty-eight thousand seven hundred twenty-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x244F1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 448
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 127,841
- Recamán's sequence
- a(43,062) = 148,721
- Square (n²)
- 22,117,935,841
- Cube (n³)
- 3,289,401,536,209,361
- Divisor count
- 2
- σ(n) — sum of divisors
- 148,722
- φ(n) — Euler's totient
- 148,720
Primality
148,721 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√148,721 = [385; (1, 1, 1, 4, 6, 2, 33, 13, 1, 153, 3, 23, 1, 3, 2, 1, 6, 69, 1, 29, 1, 6, 2, 4, …)]
Representations
- In words
- one hundred forty-eight thousand seven hundred twenty-one
- Ordinal
- 148721st
- Binary
- 100100010011110001
- Octal
- 442361
- Hexadecimal
- 0x244F1
- Base64
- AkTx
- One's complement
- 4,294,818,574 (32-bit)
- Scientific notation
- 1.48721 × 10⁵
- As a duration
- 148,721 s = 1 day, 17 hours, 18 minutes, 41 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρμηψκαʹ
- Mayan (base 20)
- 𝋲·𝋫·𝋰·𝋡
- Chinese
- 一十四萬八千七百二十一
- Chinese (financial)
- 壹拾肆萬捌仟柒佰貳拾壹
Also seen as
UTF-8 encoding: F0 A4 93 B1 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.68.241.
- Address
- 0.2.68.241
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.68.241
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 148,721 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 148721 first appears in π at position 797,101 of the decimal expansion (the 797,101ordinal-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
- 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.