Number

106

106 is a composite number, even, a calendar year.

Deficient Number Evil Number Flippable Recamán's Sequence Semiprime Squarefree Year

Historical context — 106 AD

Calendar year

Year 106 (CVI) was a common year starting on Thursday of the Julian calendar.

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Historical context — 106 BC

Calendar year

Year 106 BC was a year of the pre-Julian Roman calendar.

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Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 52
Started on: Friday
January 1, 106
Ended on: Friday
December 31, 106
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 100s
100–109
Century: 2nd century
101–200
Millennium: 1st millennium
1–1000
Years ago: 1,920
1920 years before 2026.

In other calendars

Hebrew: 3866 / 3867 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Fire zodiac:Horse
Sexagenary cycle position 43 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 649 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 98 / 99 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 28 / 27 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 7
Digit product: 0
Digital root: 7
Palindrome: No
Bit width: 7 bits
Reversed: 601
Flips to (rotate 180°): 901
Recamán's sequence: a(375) = 106
Square (n²): 11,236
Cube (n³): 1,191,016
Divisor count: 4
σ(n) — sum of divisors: 162
φ(n) — Euler's totient: 52
Sum of prime factors: 55

Primality

Prime factorization: 2 × 53

Nearest primes: 103 (−3) · 107 (+1)

Divisors & multiples

All divisors (4)

1 · 2 · 53 (half) · 106

Aliquot sum (sum of proper divisors): 56

Factor pairs (a × b = 106)

1 × 106

2 × 53

First multiples

106 · 212 (double) · 318 · 424 · 530 · 636 · 742 · 848 · 954 · 1,060

Sums & aliquot sequence

As a sum of two squares: 5² + 9²

As consecutive integers: 25 + 26 + 27 + 28

Aliquot sequence: 106 → 56 → 64 → 63 → 41 → 1 → 0 — terminates at zero

Representations

In words: one hundred six
Ordinal: 106th
Roman numeral: CVI
Binary: 1101010
Octal: 152
Hexadecimal: 0x6A
Base64: ag==
One's complement: 149 (8-bit)

In other bases

ternary (3) 10221

quaternary (4) 1222

quinary (5) 411

senary (6) 254

septenary (7) 211

nonary (9) 127

undecimal (11) 97

duodecimal (12) 8a

tridecimal (13) 82

tetradecimal (14) 78

pentadecimal (15) 71

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ρϛʹ
Mayan (base 20): 𝋥·𝋦
Chinese: 一百零六
Chinese (financial): 壹佰零陸

In other modern scripts

Eastern Arabic ١٠٦ Devanagari १०६ Bengali ১০৬ Tamil ௧௦௬ Thai ๑๐๖ Tibetan ༡༠༦ Khmer ១០៦ Lao ໑໐໖ Burmese ၁၀၆

Digit at this position in famous constants

π — Pi (π): Digit 106 = 8
e — Euler's number (e): Digit 106 = 6
φ — Golden ratio (φ): Digit 106 = 4
√2 — Pythagoras's (√2): Digit 106 = 3
ln 2 — Natural log of 2: Digit 106 = 1
γ — Euler-Mascheroni (γ): Digit 106 = 1

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 106, here are decompositions:

3 + 103 = 106
5 + 101 = 106
17 + 89 = 106
23 + 83 = 106
47 + 59 = 106
53 + 53 = 106

ASCII character

As an ASCII codepoint, 106 is j. Printable ASCII character j.

Hex color

#00006A

RGB(0, 0, 106)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.106.

Address: 0.0.0.106
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.106

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