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13,261

13,261 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 Recamán's Sequence Semiprime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
13
Digit product
36
Digital root
4
Palindrome
No
Bit width
14 bits
Reversed
16,231
Recamán's sequence
a(47,753) = 13,261
Square (n²)
175,854,121
Cube (n³)
2,332,001,498,581
Divisor count
4
σ(n) — sum of divisors
13,500
φ(n) — Euler's totient
13,024
Sum of prime factors
238

Primality

Prime factorization: 89 × 149

Nearest primes: 13,259 (−2) · 13,267 (+6)

Divisors & multiples

All divisors (4)
1 · 89 · 149 · 13261
Aliquot sum (sum of proper divisors): 239
Factor pairs (a × b = 13,261)
1 × 13261
89 × 149
First multiples
13,261 · 26,522 (double) · 39,783 · 53,044 · 66,305 · 79,566 · 92,827 · 106,088 · 119,349 · 132,610

Sums & aliquot sequence

As a sum of two squares: 6² + 115² = 45² + 106²
As consecutive integers: 6,630 + 6,631 105 + 106 + … + 193 15 + 16 + … + 163
Aliquot sequence: 13,261 239 1 0 — terminates at zero

Representations

In words
thirteen thousand two hundred sixty-one
Ordinal
13261st
Binary
11001111001101
Octal
31715
Hexadecimal
0x33CD
Base64
M80=
One's complement
52,274 (16-bit)
In other bases
ternary (3) 200012011
quaternary (4) 3033031
quinary (5) 411021
senary (6) 141221
septenary (7) 53443
nonary (9) 20164
undecimal (11) 9a66
duodecimal (12) 7811
tridecimal (13) 6061
tetradecimal (14) 4b93
pentadecimal (15) 3de1

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹 𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian)
͵ιγσξαʹ
Mayan (base 20)
𝋡·𝋭·𝋣·𝋡
Chinese
一萬三千二百六十一
Chinese (financial)
壹萬參仟貳佰陸拾壹
In other modern scripts
Eastern Arabic ١٣٢٦١ Devanagari १३२६१ Bengali ১৩২৬১ Tamil ௧௩௨௬௧ Thai ๑๓๒๖๑ Tibetan ༡༣༢༦༡ Khmer ១៣២៦១ Lao ໑໓໒໖໑ Burmese ၁၃၂၆၁

Digit at this position in famous constants

π — Pi (π)
Digit 13,261 = 0
e — Euler's number (e)
Digit 13,261 = 1
φ — Golden ratio (φ)
Digit 13,261 = 8
√2 — Pythagoras's (√2)
Digit 13,261 = 5
ln 2 — Natural log of 2
Digit 13,261 = 0
γ — Euler-Mascheroni (γ)
Digit 13,261 = 7

Also seen as

Unicode codepoint
Square Kk
U+33CD
Other symbol (So)

UTF-8 encoding: E3 8F 8D (3 bytes).

Hex color
#0033CD
RGB(0, 51, 205)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.51.205.

Address
0.0.51.205
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.51.205

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

Position in π

The digit sequence 13261 first appears in π at position 70,795 of the decimal expansion (the 70,795ordinal-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.