30000

← 29999 30001 → 30000
List of numbers — Integers ← 10k 20k 30k 40k 50k 60k 70k 80k 90k →
Cardinal	30000
Ordinal	30000th (thirty thousandth)
Factorization
Roman numeral	XXX
Binary	1110101001100002
Octal	724608
Duodecimal	1544012
Hexadecimal	753016

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

Selected numbers

• 30000 – round number
• 30029 – primorial prime
• 30030 – primorial
• 30240 – harmonic divisor number
• 30420 – pentagonal pyramidal number
• 30694 – open meandric number
• 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 – , centered hexagonal number
• 32767 – , largest positive value for a signed (two's complement) 16-bit integer on a computer.
• 32768 – , 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
• 34841 – start of a prime quadruplet^[2]
• 35720 – square pyramidal number
• 35840 – number of ounces in a long ton (2,240 pounds)
• 35890 – tribonacci number
• 35899 – alternating factorial
• 35937 – chiliagonal 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
• 38962 – Kaprekar number
• 39559 – octahedral number
• 39648 – tetranacci number

References