Number

12,149

12,149 is a prime, odd.

12,149 (twelve thousand one hundred forty-nine) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x2F75.

Arithmetic Number Chen Prime Cube-Free Deficient Number Emirp Evil Number Happy Number Prime Pythagorean Prime Recamán's Sequence Sexy Prime Squarefree

Interestingness

★ ★ ★ ★ ★

10 notable facts · grade A

12,137 12,138 12,139 12,140 12,141 12,142 12,143 12,144 12,145 12,146 12,147 12,148 12,149 12,150 12,151 12,152 12,153 12,154 12,155 12,156 12,157 12,158 12,159 12,160 12,161

less more

Properties

Parity: Odd
Digit count: 5
Digit sum: 17
Digit product: 72
Digital root: 8
Palindrome: No
Bit width: 14 bits
Reversed: 94,121
Recamán's sequence: a(22,486) = 12,149
Square (n²): 147,598,201
Cube (n³): 1,793,170,543,949
Divisor count: 2
σ(n) — sum of divisors: 12,150
φ(n) — Euler's totient: 12,148

Primality

12,149 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 12149

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 12,149)

1 × 12149

First multiples

12,149 · 24,298 (double) · 36,447 · 48,596 · 60,745 · 72,894 · 85,043 · 97,192 · 109,341 · 121,490

Sums & aliquot sequence

As a sum of two squares: 7² + 110²

As consecutive integers: 6,074 + 6,075

Continued fraction of √n

√12,149 = [110; (4, 2, 43, 1, 1, 1, 4, 2, 1, 8, 7, 1, 3, 7, 1, 1, 1, 1, 2, 19, 1, 1, 1, 10, …)]

Representations

In words: twelve thousand one hundred forty-nine
Ordinal: 12149th
Binary: 10111101110101
Octal: 27565
Hexadecimal: 0x2F75
Base64: L3U=
One's complement: 53,386 (16-bit)
Scientific notation: 1.2149 × 10⁴
As a duration: 12,149 s = 3 hours, 22 minutes, 29 seconds

In other bases

ternary (3) 121122222

quaternary (4) 2331311

quinary (5) 342044

senary (6) 132125

septenary (7) 50264

nonary (9) 17588

undecimal (11) 9145

duodecimal (12) 7045

tridecimal (13) 56b7

tetradecimal (14) 45db

pentadecimal (15) 38ee

As an angle

12,149° = 33 × 360° + 269°

269° ≈ 4.695 rad

Compass bearing: W (west)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵ιβρμθʹ
Mayan (base 20): 𝋡·𝋪·𝋧·𝋩
Chinese: 一萬二千一百四十九
Chinese (financial): 壹萬貳仟壹佰肆拾玖

In other modern scripts

Eastern Arabic ١٢١٤٩ Devanagari १२१४९ Bengali ১২১৪৯ Tamil ௧௨௧௪௯ Thai ๑๒๑๔๙ Tibetan ༡༢༡༤༩ Khmer ១២១៤៩ Lao ໑໒໑໔໙ Burmese ၁၂၁၄၉

Digit at this position in famous constants

π — Pi (π): Digit 12,149 = 9
e — Euler's number (e): Digit 12,149 = 4
φ — Golden ratio (φ): Digit 12,149 = 1
√2 — Pythagoras's (√2): Digit 12,149 = 7
ln 2 — Natural log of 2: Digit 12,149 = 2
γ — Euler-Mascheroni (γ): Digit 12,149 = 9

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 12,143 (gap of 6)
Next prime: 12,157 (gap of 8)

Pair status: sexy with 12143.

Unicode codepoint

⽵

Kangxi Radical Bamboo

U+2F75

Other symbol (So)

UTF-8 encoding: E2 BD B5 (3 bytes).

Lookup U+2F75 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#002F75

RGB(0, 47, 117)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.47.117.

Address: 0.0.47.117
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.47.117

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 12,149 Hz is closest to:

Concert pitch (A4 = 440 Hz): F♯9 (11839.8 Hz, +45¢ — about midway to G9)
Scientific pitch (C4 = 256 Hz): G9 (12274.1 Hz, -18¢)
Baroque pitch (A4 = 415 Hz): G9 (11831.1 Hz, +46¢ — about midway to G♯9)

Position in π

The digit sequence 12149 first appears in π at position 54,245 of the decimal expansion (the 54,245ordinal-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.

Look up 12149 on Pi Search ↗