30000 (number)

← 29999 30000 30001 →
List of numbers — Integers ← 0 10k 20k 30k 40k 50k 60k 70k 80k 90k →
Cardinal	thirty thousand
Ordinal	30000th (thirty thousandth)
Factorization	2^4× 3 × 5^4
Roman numeral	XXX
Binary	1110101001100002
Ternary	11120110103
Quaternary	131103004
Quinary	14300005
Senary	3505206
Octal	724608
Duodecimal	1544012
Hexadecimal	753016
Vigesimal	3F0020
Base 36	N5C36

30,000 (thirty thousand) is the natural number that comes after 29,999 and before 30,001.

Selected numbers in the range 30000–39999

• 30000 – round number
• 30029 – primorial prime
• 30030 – primorial
• 30240 – harmonic divisor number
• 30420 – pentagonal pyramidal number
• 30694 – open meandric number
• 30941 – first base 13 repunit prime
• 31116 – octahedral number
• 31337 – cousin prime, pronounced elite, an alternate way to spell 1337, an obfuscated alphabet made with numbers and punctuation, known and used in the gamer, hacker and BBS cultures.
• 31395 – square pyramidal number
• 31397 – prime number followed by a record prime gap of 72, the first above 52^[1]
• 31721 – start of a prime quadruplet^[2]
• 31929 – Zeisel number
• 32043 – smallest number whose square is pandigital.
• 32045 – can be expressed as a sum of two squares in more ways than any smaller number^[3]
• 32760 – harmonic divisor number
• 32761 – 181², centered hexagonal number
• 32767 – 2¹⁵ − 1, largest positive value for a signed (two's complement) 16-bit integer on a computer.
• 32768 – 2¹⁵, maximum absolute value of a negative value for a signed (two's complement) 16-bit integer on a computer.
• 32800 – pentagonal pyramidal number
• 32993 – Leyland number
• 33461 – Pell number, Markov number
• 33511 – square pyramidal number
• 33781 – octahedral number
• 34560 – 5 superfactorial
• 34841 – start of a prime quadruplet^[2]
• 34969 – favorite number of the Muppet character Count von Count ^[4]
• 35720 – square pyramidal number
• 35840 – number of ounces in a long ton (2,240 pounds)
• 35890 – tribonacci number
• 35899 – alternating factorial
• 35937 – 33³, chiliagonal number
• 35964 – digit-reassembly number
• 36100 – sum of the cubes of the first 19 positive integers
• 36594 – octahedral number
• 37378 – semi-meandric number
• 37666 – Markov number
• 37926 – pentagonal pyramidal number
• 38024 – square pyramidal number
• 38416 – 14⁴
• 38962 – Kaprekar number
• 39304 – 34³
• 39559 – octahedral number
• 39648 – tetranacci number

References

1. Weisstein, Eric W., "Prime Gaps", MathWorld.
2. "Sloane's A007530 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
3. "Sloane's A088959 ", The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
4. "Why was 34,969 Count von Count's magic number?". BBC News. 2012-08-30. Retrieved 2012-08-31.