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13,105

13,105 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Arithmetic Number Deficient Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
10
Digit product
0
Digital root
1
Palindrome
No
Bit width
14 bits
Reversed
50,131
Recamán's sequence
a(48,065) = 13,105
Square (n²)
171,741,025
Cube (n³)
2,250,666,132,625
Divisor count
4
σ(n) — sum of divisors
15,732
φ(n) — Euler's totient
10,480
Sum of prime factors
2,626

Primality

Prime factorization: 5 × 2621

Nearest primes: 13,103 (−2) · 13,109 (+4)

Divisors & multiples

All divisors (4)
1 · 5 · 2621 · 13105
Aliquot sum (sum of proper divisors): 2,627
Factor pairs (a × b = 13,105)
1 × 13105
5 × 2621
First multiples
13,105 · 26,210 (double) · 39,315 · 52,420 · 65,525 · 78,630 · 91,735 · 104,840 · 117,945 · 131,050

Sums & aliquot sequence

As a sum of two squares: 28² + 111² = 72² + 89²
As consecutive integers: 6,552 + 6,553 2,619 + 2,620 + 2,621 + 2,622 + 2,623 1,306 + 1,307 + … + 1,315
Aliquot sequence: 13,105 2,627 109 1 0 — terminates at zero

Representations

In words
thirteen thousand one hundred five
Ordinal
13105th
Binary
11001100110001
Octal
31461
Hexadecimal
0x3331
Base64
MzE=
One's complement
52,430 (16-bit)
In other bases
ternary (3) 122222101
quaternary (4) 3030301
quinary (5) 404410
senary (6) 140401
septenary (7) 53131
nonary (9) 18871
undecimal (11) 9934
duodecimal (12) 7701
tridecimal (13) 5c71
tetradecimal (14) 4ac1
pentadecimal (15) 3d3a

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓍢𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιγρεʹ
Mayan (base 20)
𝋡·𝋬·𝋯·𝋥
Chinese
一萬三千一百零五
Chinese (financial)
壹萬參仟壹佰零伍
In other modern scripts
Eastern Arabic ١٣١٠٥ Devanagari १३१०५ Bengali ১৩১০৫ Tamil ௧௩௧௦௫ Thai ๑๓๑๐๕ Tibetan ༡༣༡༠༥ Khmer ១៣១០៥ Lao ໑໓໑໐໕ Burmese ၁၃၁၀၅

Digit at this position in famous constants

π — Pi (π)
Digit 13,105 = 6
e — Euler's number (e)
Digit 13,105 = 0
φ — Golden ratio (φ)
Digit 13,105 = 8
√2 — Pythagoras's (√2)
Digit 13,105 = 5
ln 2 — Natural log of 2
Digit 13,105 = 0
γ — Euler-Mascheroni (γ)
Digit 13,105 = 6

Also seen as

Unicode codepoint
Square Biru
U+3331
Other symbol (So)

UTF-8 encoding: E3 8C B1 (3 bytes).

Hex color
#003331
RGB(0, 51, 49)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.51.49.

Address
0.0.51.49
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.51.49

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

Position in π

The digit sequence 13105 first appears in π at position 55,886 of the decimal expansion (the 55,886ordinal-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.