Number

12,109

12,109 is a prime, odd.

Arithmetic Number Cousin Prime Deficient Number Emirp Odious Number Prime Pythagorean Prime Recamán's Sequence Squarefree Twin Prime

Properties

Parity: Odd
Digit count: 5
Digit sum: 13
Digit product: 0
Digital root: 4
Palindrome: No
Bit width: 14 bits
Reversed: 90,121
Recamán's sequence: a(22,566) = 12,109
Square (n²): 146,627,881
Cube (n³): 1,775,517,011,029
Divisor count: 2
σ(n) — sum of divisors: 12,110
φ(n) — Euler's totient: 12,108

Primality

12,109 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 12109

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 12,109)

1 × 12109

First multiples

12,109 · 24,218 (double) · 36,327 · 48,436 · 60,545 · 72,654 · 84,763 · 96,872 · 108,981 · 121,090

Sums & aliquot sequence

As a sum of two squares: 3² + 110²

As consecutive integers: 6,054 + 6,055

Representations

In words: twelve thousand one hundred nine
Ordinal: 12109th
Binary: 10111101001101
Octal: 27515
Hexadecimal: 0x2F4D
Base64: L00=
One's complement: 53,426 (16-bit)

In other bases

ternary (3) 121121111

quaternary (4) 2331031

quinary (5) 341414

senary (6) 132021

septenary (7) 50206

nonary (9) 17544

undecimal (11) 9109

duodecimal (12) 7011

tridecimal (13) 5686

tetradecimal (14) 45ad

pentadecimal (15) 38c4

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹 𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓂍𓆼𓆼𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵ιβρθʹ
Mayan (base 20): 𝋡·𝋪·𝋥·𝋩
Chinese: 一萬二千一百零九
Chinese (financial): 壹萬貳仟壹佰零玖

In other modern scripts

Eastern Arabic ١٢١٠٩ Devanagari १२१०९ Bengali ১২১০৯ Tamil ௧௨௧௦௯ Thai ๑๒๑๐๙ Tibetan ༡༢༡༠༩ Khmer ១២១០៩ Lao ໑໒໑໐໙ Burmese ၁၂၁၀၉

Digit at this position in famous constants

π — Pi (π): Digit 12,109 = 4
e — Euler's number (e): Digit 12,109 = 5
φ — Golden ratio (φ): Digit 12,109 = 5
√2 — Pythagoras's (√2): Digit 12,109 = 1
ln 2 — Natural log of 2: Digit 12,109 = 9
γ — Euler-Mascheroni (γ): Digit 12,109 = 0

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 12,107 (gap of 2)
Next prime: 12,113 (gap of 4)

Pair status: twin with 12107, cousin with 12113.

Unicode codepoint

⽍

Kangxi Radical Death

U+2F4D

Other symbol (So)

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

Lookup U+2F4D on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#002F4D

RGB(0, 47, 77)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.47.77.

Address: 0.0.47.77
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.47.77

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

Position in π

The digit sequence 12109 first appears in π at position 63,081 of the decimal expansion (the 63,081ordinal-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.

Look up 12109 on Pi Search ↗