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100,561

100,561 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
6
Digit sum
13
Digit product
0
Digital root
4
Palindrome
No
Bit width
17 bits
Reversed
165,001
Recamán's sequence
a(98,969) = 100,561
Square (n²)
10,112,514,721
Cube (n³)
1,016,924,592,858,481
Divisor count
4
σ(n) — sum of divisors
101,232
φ(n) — Euler's totient
99,892
Sum of prime factors
670

Primality

Prime factorization: 227 × 443

Nearest primes: 100,559 (−2) · 100,591 (+30)

Divisors & multiples

All divisors (4)
1 · 227 · 443 · 100561
Aliquot sum (sum of proper divisors): 671
Factor pairs (a × b = 100,561)
1 × 100561
227 × 443
First multiples
100,561 · 201,122 (double) · 301,683 · 402,244 · 502,805 · 603,366 · 703,927 · 804,488 · 905,049 · 1,005,610

Sums & aliquot sequence

As consecutive integers: 50,280 + 50,281 330 + 331 + … + 556 6 + 7 + … + 448
Aliquot sequence: 100,561 671 73 1 0 — terminates at zero

Continued fraction of √n

√100,561 = [317; (8, 1, 4, 5, 2, 2, 4, 1, 1, 4, 1, 2, 1, 3, 4, 2, 3, 10, 2, 5, 1, 2, 7, 1, …)]

Representations

In words
one hundred thousand five hundred sixty-one
Ordinal
100561st
Binary
11000100011010001
Octal
304321
Hexadecimal
0x188D1
Base64
AYjR
One's complement
4,294,866,734 (32-bit)
Scientific notation
1.00561 × 10⁵
In other bases
ternary (3) 12002221111
quaternary (4) 120203101
quinary (5) 11204221
senary (6) 2053321
septenary (7) 566116
nonary (9) 162844
undecimal (11) 6960a
duodecimal (12) 4a241
tridecimal (13) 36a06
tetradecimal (14) 2890d
pentadecimal (15) 1ebe1
Palindromic in base 15

Historical numeral systems

Babylonian (base 60)
𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹
Egyptian hieroglyphic
𓆐𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian)
͵ρφξαʹ
Mayan (base 20)
𝋬·𝋫·𝋨·𝋡
Chinese
一十萬零五百六十一
Chinese (financial)
壹拾萬零伍佰陸拾壹
In other modern scripts
Eastern Arabic ١٠٠٥٦١ Devanagari १००५६१ Bengali ১০০৫৬১ Tamil ௧௦௦௫௬௧ Thai ๑๐๐๕๖๑ Tibetan ༡༠༠༥༦༡ Khmer ១០០៥៦១ Lao ໑໐໐໕໖໑ Burmese ၁၀၀၅၆၁

Also seen as

Unicode codepoint
𘣑
Tangut Component-210
U+188D1
Other letter (Lo)

UTF-8 encoding: F0 98 A3 91 (4 bytes).

Hex color
#0188D1
RGB(1, 136, 209)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.136.209.

Address
0.1.136.209
Class
reserved
IPv4-mapped IPv6
::ffff:0.1.136.209

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 100,561 and was likely granted around 1870.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.