30,000 (thirty thousand) is the natural number that comes after 29,999 and before 30,001.
| ||||
|---|---|---|---|---|
| Cardinal | thirty thousand | |||
| Ordinal | 30000th (thirty thousandth) | |||
| Factorization | 24 × 3 × 54 | |||
| Greek numeral | ||||
| Roman numeral | XXX | |||
| Binary | 1110101001100002 | |||
| Ternary | 11120110103 | |||
| Senary | 3505206 | |||
| Octal | 724608 | |||
| Duodecimal | 1544012 | |||
| Hexadecimal | 753016 | |||
Selected numbers in the range 30001–39999
30001 to 30999
- 30029 = primorial prime
- 30030 = primorial[1]
- 30031 = smallest composite number which is one more than a primorial
- 30203 = safe prime
- 30240 = harmonic divisor number[2]
- 30323 = Sophie Germain prime and safe prime
- 30420 = pentagonal pyramidal number[3]
- 30537 = Riordan number
- 30694 = open meandric number
- 30941 = first base 13 repunit prime
31000 to 31999
- 31116 = octahedral number[4]
- 31185 = number of partitions of 39[5]
- 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 greater than 52[6]
- 31688 = the number of years approximately equal to 1 trillion seconds
- 31721 = start of a prime quadruplet[7]
- 31929 = Zeisel number[8]
32000 to 32999
- 32043 = smallest number whose square is pandigital.
- 32045 = can be expressed as a sum of two squares in more ways than any smaller number.[9]
- 32760 = harmonic divisor number[2]
- 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 = 85 = 323, maximum absolute value of a negative value for a signed (two's complement) 16-bit integer on a computer.
- 32800 = pentagonal pyramidal number[3]
- 32993 = Leyland prime[10] using 2 & 15 (215 + 152)
33000 to 33999
34000 to 34999
- 34560 = 5 superfactorial[13]
- 34790 = number of non-isomorphic set-systems of weight 13.
- 34841 = start of a prime quadruplet[7]
- 34969 = favorite number of the Muppet character Count von Count[14]
35000 to 35999
- 35720 = square pyramidal number
- 35840 = number of ounces in a long ton (2,240 pounds)
- 35890 = tribonacci number[15]
- 35899 = alternating factorial[16]
- 35937 = 333, chiliagonal number[17]
- 35964 = digit-reassembly number
36000 to 36999
37000 to 37999
- 37338 = number of partitions of 40[5]
- 37378 = semi-meandric number[19]
- 37634 = third term of the Lucas–Lehmer sequence
- 37666 = Markov number[12]
- 37926 = pentagonal pyramidal number[3]
38000 to 38999
- 38024 = square pyramidal number
- 38209 = n such that n | (3n + 5)[20]
- 38305 = the largest Forges-compatible number (for index 32) to the field . But a conjecture of Viggo Brun predicts that there are infinitely many such numbers for any Galois field unless is bad.
- 38416 = 144
- 38501 = 74 + 1902: Friedlander-Iwaniec prime.[21] Smallest prime separated by at least 40 from the nearest primes (38461 and 38543). It is thus an isolated prime.[22] Chen prime.[23]
- 38807 = number of non-equivalent ways of expressing 10,000,000 as the sum of two prime numbers[24]
- 38962 = Kaprekar number[25]
39000 to 39999
Primes
There are 958 prime numbers between 30000 and 40000.
References
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