Number

61,001

61,001 is a prime, odd.

61,001 (sixty-one thousand one) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xEE49.

Arithmetic Number Chen Prime Cube-Free Deficient Number Flippable Odious Number Prime Pythagorean Prime Recamán's Sequence Self Number Sexy Prime Squarefree

Interestingness

★ ★ ★ ★ ★

10 notable facts · grade A

60,989 60,990 60,991 60,992 60,993 60,994 60,995 60,996 60,997 60,998 60,999 61,000 61,001 61,002 61,003 61,004 61,005 61,006 61,007 61,008 61,009 61,010 61,011 61,012 61,013

less more

Properties

Parity: Odd
Digit count: 5
Digit sum: 8
Digit product: 0
Digital root: 8
Palindrome: No
Bit width: 16 bits
Reversed: 10,016
Flips to (rotate 180°): 10,019
Recamán's sequence: a(27,798) = 61,001
Square (n²): 3,721,122,001
Cube (n³): 226,992,163,183,001
Divisor count: 2
σ(n) — sum of divisors: 61,002
φ(n) — Euler's totient: 61,000

Primality

61,001 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 61001

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 61,001)

1 × 61001

First multiples

61,001 · 122,002 (double) · 183,003 · 244,004 · 305,005 · 366,006 · 427,007 · 488,008 · 549,009 · 610,010

Sums & aliquot sequence

As a sum of two squares: 76² + 235²

As consecutive integers: 30,500 + 30,501

Continued fraction of √n

√61,001 = [246; (1, 60, 1, 2, 1, 30, 8, 15, 3, 4, 1, 6, 1, 9, 1, 1, 1, 3, 4, 1, 12, 1, 1, 5, …)]

Representations

In words: sixty-one thousand one
Ordinal: 61001st
Binary: 1110111001001001
Octal: 167111
Hexadecimal: 0xEE49
Base64: 7kk=
One's complement: 4,534 (16-bit)
Scientific notation: 6.1001 × 10⁴
As a duration: 61,001 s = 16 hours, 56 minutes, 41 seconds

In other bases

ternary (3) 10002200022

quaternary (4) 32321021

quinary (5) 3423001

senary (6) 1150225

septenary (7) 342563

nonary (9) 102608

undecimal (11) 41916

duodecimal (12) 2b375

tridecimal (13) 219c5

tetradecimal (14) 18333

pentadecimal (15) 1311b

As an angle

61,001° = 169 × 360° + 161°

161° ≈ 2.81 rad

Compass bearing: SSE (south-southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓏺
Greek (Milesian): ͵ξααʹ
Mayan (base 20): 𝋧·𝋬·𝋪·𝋡
Chinese: 六萬一千零一
Chinese (financial): 陸萬壹仟零壹

In other modern scripts

Eastern Arabic ٦١٠٠١ Devanagari ६१००१ Bengali ৬১০০১ Tamil ௬௧௦௦௧ Thai ๖๑๐๐๑ Tibetan ༦༡༠༠༡ Khmer ៦១០០១ Lao ໖໑໐໐໑ Burmese ၆၁၀၀၁

Digit at this position in famous constants

π — Pi (π): Digit 61,001 = 6
e — Euler's number (e): Digit 61,001 = 7
φ — Golden ratio (φ): Digit 61,001 = 7
√2 — Pythagoras's (√2): Digit 61,001 = 9
ln 2 — Natural log of 2: Digit 61,001 = 8
γ — Euler-Mascheroni (γ): Digit 61,001 = 8

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 60,961 (gap of 40)
Next prime: 61,007 (gap of 6)

Pair status: sexy with 61007.

Hex color

#00EE49

RGB(0, 238, 73)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.238.73.

Address: 0.0.238.73
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.238.73

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

Position in π

The digit sequence 61001 first appears in π at position 41,630 of the decimal expansion (the 41,630ordinal-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.

Look up 61001 on Pi Search ↗