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101,531

101,531 is a prime, 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 Chen Prime Cousin Prime Cube-Free Deficient Number Emirp Odious Number Prime Sexy Prime Squarefree Twin Prime

Interestingness

Properties

Parity
Odd
Digit count
6
Digit sum
11
Digit product
0
Digital root
2
Palindrome
No
Bit width
17 bits
Reversed
135,101
Square (n²)
10,308,543,961
Cube (n³)
1,046,636,776,904,291
Divisor count
2
σ(n) — sum of divisors
101,532
φ(n) — Euler's totient
101,530

Primality

101,531 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 101531
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 101,531)
1 × 101531
First multiples
101,531 · 203,062 (double) · 304,593 · 406,124 · 507,655 · 609,186 · 710,717 · 812,248 · 913,779 · 1,015,310

Sums & aliquot sequence

As consecutive integers: 50,765 + 50,766

Continued fraction of √n

√101,531 = [318; (1, 1, 1, 3, 2, 1, 1, 4, 1, 4, 3, 1, 1, 1, 1, 4, 24, 3, 2, 2, 11, 5, 1, 2, …)]

Representations

In words
one hundred one thousand five hundred thirty-one
Ordinal
101531st
Binary
11000110010011011
Octal
306233
Hexadecimal
0x18C9B
Base64
AYyb
One's complement
4,294,865,764 (32-bit)
Scientific notation
1.01531 × 10⁵
As a duration
101,531 s = 1 day, 4 hours, 12 minutes, 11 seconds
In other bases
ternary (3) 12011021102
quaternary (4) 120302123
quinary (5) 11222111
senary (6) 2102015
septenary (7) 602003
nonary (9) 164242
undecimal (11) 6a311
duodecimal (12) 4a90b
tridecimal (13) 372a1
tetradecimal (14) 29003
pentadecimal (15) 2013b

Historical numeral systems

Babylonian (base 60)
𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹 𒌋𒁹
Egyptian hieroglyphic
𓆐𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺
Greek (Milesian)
͵ραφλαʹ
Mayan (base 20)
𝋬·𝋭·𝋰·𝋫
Chinese
一十萬一千五百三十一
Chinese (financial)
壹拾萬壹仟伍佰參拾壹
In other modern scripts
Eastern Arabic ١٠١٥٣١ Devanagari १०१५३१ Bengali ১০১৫৩১ Tamil ௧௦௧௫௩௧ Thai ๑๐๑๕๓๑ Tibetan ༡༠༡༥༣༡ Khmer ១០១៥៣១ Lao ໑໐໑໕໓໑ Burmese ၁၀၁၅၃၁

Also seen as

Prime neighborhood

Adjacent primes:

Pair status: twin with 101533, cousin with 101527.

Unicode codepoint
𘲛
Khitan Small Script Character-18C9B
U+18C9B
Other letter (Lo)

UTF-8 encoding: F0 98 B2 9B (4 bytes).

Hex color
#018C9B
RGB(1, 140, 155)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.140.155.

Address
0.1.140.155
Class
reserved
IPv4-mapped IPv6
::ffff:0.1.140.155

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 101,531 and was likely granted around 1870.

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

Position in π

The digit sequence 101531 first appears in π at position 42,863 of the decimal expansion (the 42,863ordinal-suffix:rd 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.