100,000 (one hundred thousand) is the natural number following 99,999 and preceding 100,001. In scientific notation, it is written as 105.
Terms for 100,000 In Bangladesh, India, Pakistan and South Asia, one hundred thousand is called a lakh, and is written as 1,00,000. The Thai, Lao, Khmer and Vietnamese languages also have separate words for this number: , , (all saen), and respectively. The Malagasy word is .
In the Netherlands, a 'ton' is a colloquialism for a denomination of 100.000 monetary units. In the guilders period a ton would denote 100.000 guilders. With the introduction of the euro, a ton would come to mean 100.000 euros. Usage is mostly limited to the financial sphere and to the buying and selling of houses. It is not used in official settings because of the ambiguity with the commonly used metric tonne. While usage is common in the Netherlands, it sees almost no use in Belgium.
In Cyrillic numerals, it is known as the legion (): or .
Values of 100,000 In astronomy, 100,000 metres, 100 kilometres, or 100 km (62 miles) is the altitude at which the Fédération Aéronautique Internationale (FAI) defines spaceflight to begin.
In paleoclimatology, the 100,000-year problem is a mismatch between the temperature record and the modeled incoming solar radiation.
In the Irish language, () is a popular greeting meaning "a hundred thousand welcomes".
Selected 6-digit numbers (100,001–999,999)
100,001 to 199,999 100,001 = second smallest 6-digit number 100,003 = smallest 6-digit prime number 100,128 = smallest triangular number with 6 digits and the 447th triangular number 100,151 = twin prime with 100,153 100,153 = twin prime with 100,151 100,255 = Friedman number links to a list of all 6-digit Friedman numbers, which gives 100255 = 20051*5 100,489 = 3172, the smallest 6-digit square 101,101 = smallest palindromic Carmichael number 101,723 = smallest prime number whose square is a pandigital number containing each digit from 0 to 9 102,564 = The smallest parasitic number 103,049 = Schröder–Hipparchus number 103,680 = highly totient number 103,769 = the number of combinatorial types of 5-dimensional parallelohedra 103,823 = 473, the smallest 6-digit cube and nice Friedman number (−1 + 0 + 3×8×2)3 104,480 = number of non-isomorphic set-systems of weight 14. 104,723 = the 9,999th prime number 104,729 = the 10,000th prime number 104,869 = the smallest prime number containing every non-prime digit 104,976 = 184, 3-smooth number 105,071 = number of triangle-free graphs on 11 vertices 105,558 = number of partitions of 46 105,664 = harmonic divisor number 108,968 = number of signed trees with 11 nodes 109,376 = automorphic number 110,880 = 30th highly composite number 111,111 = repunit 111,777 = smallest natural number requiring 17 syllables in American English, 19 in British English 113,634 = Motzkin number for n = 14 114,243/80,782 ≈ √2 114,689 = prime factor of F12 115,975 = Bell number 116,281 = 3412, square number, centered decagonal number, 18-gonal number 117,067 = first vampire prime 117,649 = 76 117,800 = harmonic divisor number 120,032 = number of primitive polynomials of degree 22 over GF(2) 120,284 = Keith number 120,960 = highly totient number 121,393 = Fibonacci number 123,717 = smallest digitally balanced number in base 7 123,867 = number of trees with 18 unlabeled nodes 124,754 = number of partitions of 47 125,673 = logarithmic number 127,777 = smallest natural number requiring 18 syllables in American English, 20 in British English 127,912 = Wedderburn–Etherington number 128,981 = Starts the first prime gap sequence of 2, 4, 6, 8, 10, 12, 14 129,106 = Keith number 130,321 = 194 131,071 = Mersenne prime 131,072 = 217, largest determinant of a (real) {0,1}-matrix of order 15. 131,361 = Leyland number 134,340 = Pluto's minor planet designation 135,135 = double factorial of 13 135,137 = Markov number 142,129 = 3772, square number, dodecagonal number 142,857 = Kaprekar number, smallest cyclic number in decimal. 144,000 = number with religious significance 147,273 = number of partitions of 48 147,640 = Keith number 148,149 = Kaprekar number 152,381 = unique prime in base 20 156,146 = Keith number 155,921 = smallest prime number being the only prime in an interval from 100n to 100n + 99 160,000 = 204 160,176 = number of reduced trees with 26 nodes 161,051 = 115 161,280 = highly totient number 166,320 = 31st highly composite number 167,400 = harmonic divisor number 167,894 = number of ways to partition {1,2,3,4,5,6,7,8} and then partition each cell (block) into subcells. 173,525 = number of partitions of 49 173,600 = harmonic divisor number 174,680 = Keith number 174,763 = Wagstaff prime 176,906 = number of 24-bead necklaces (turning over is allowed) where complements are equivalent 177,147 = 311 177,777 = smallest natural number requiring 19 syllables in American English, 21 in British English 178,478 = Leyland number 181,440 = highly totient number 181,819 = Kaprekar number 182,362 = number of 23-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed 183,186 = Keith number 183,231 = number of partially ordered set with 9 unlabeled elements 187,110 = Kaprekar number 189,819 = number of letters in the longest English word, taking 3 hours to pronounce 194,481 = 214 195,000 = smallest triangular number divisible by 1000 195,025 = Pell number, Markov number 196,418 = Fibonacci number, Markov number 196,560 = the kissing number in 24 dimensions 196,883 = the dimension of the smallest nontrivial irreducible representation of the Monster group 196,884 = the coefficient of q in the Fourier series expansion of the j-invariant. The adjacency of 196883 and 196884 was important in suggesting monstrous moonshine. 199,999 = prime number
200,000 to 299,999 200,000 = 2 × 105 202,717 = k such that the sum of the squares of the first k primes is divisible by k. 206,098 – Large Schröder number 206,265 = rounded number of arc seconds in a radian (see also parsec), since = 206,264.806... 207,360 = highly totient number 208,012 = the Catalan number C12 208,335 = the largest number to be both triangular and square pyramidal 208,495 = Kaprekar number 212,159 = smallest unprimeable number ending in 1, 3, 7 or 9 221,760 = 32nd highly composite number 222,222 = repdigit 224,737 = the 20,000th prime number 227,475 = Riordan number 234,256 = 224 237,510 = harmonic divisor number 238,591 = number of free 13-ominoes 241,920 = highly totient number 242,060 = harmonic divisor number 248,832 = 125, 100,00012, AKA a gross-great-gross (10012 great-grosses); the smallest fifth power that can be represented as the sum of only 6 fifth powers: 125 = 45 + 55 + 65 + 75 + 95 + 115 253,293 = number of prime knots with 15 crossings 255,168 = number of ways to play tic tac toe 262,144 = 218; exponential factorial of 4; a superperfect number 262,468 = Leyland number 268,705 = Leyland number 271,129 – smallest known Sierpiński prime 274,177 = prime factor of the Fermat number F6 275,807/195,025 ≈ √2 276,480 = number of primitive polynomials of degree 24 over GF(2) 277,200 = 33rd highly composite number 279,841 = 234 279,936 = 67 280,859 = a prime number whose square 78881777881 is tridigital 283,086 = number of primes with distinct digits, the largest being 987,654,103 291,400 = number of non-equivalent ways of expressing 100,000,000 as the sum of two prime numbers 293,547 = Wedderburn–Etherington number 293,999 = twin prime with 294,001, Sophie Germain prime 294,001 = smallest weakly prime number in base 10, twin prime with 293,999 294,685 = Markov number 298,320 = Keith number
300,000 to 399,999 310,572 = Motzkin number 314,159 = pi-prime 316,749 = number of reduced trees with 27 nodes 317,811 = Fibonacci number 317,955 = number of trees with 19 unlabeled nodes 318,682 = Kaprekar number 325,878 = Fine number 326,981 = alternating factorial 329,967 = Kaprekar number 331,776 = 244 332,640 = 34th highly composite number; harmonic divisor number 333,333 = repdigit 333,667 = sexy prime and unique prime 333,673 = sexy prime with 333,679 333,679 = sexy prime with 333,673 337,500 = 22 × 33 × 55 337,594 = number of 25-bead necklaces (turning over is allowed) where complements are equivalent 349,716 = number of 24-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed 350,377 = the 30,000th prime number 351,351 = only known odd abundant number that is not the sum of some of its proper, nontrivial (i.e. >1) divisors . 351,352 = Kaprekar number 355,419 = Keith number 356,643 = Kaprekar number 356,960 = number of primitive polynomials of degree 23 over GF(2) 360,360 = harmonic divisor number; smallest number divisible by the numbers from 1 to 15 (there is no smaller number divisible by the numbers from 1 to 14 since any number divisible by 3 and 5 must be divisible by 15) 362,880 = 9!, highly totient number 369,119 = prime number which divides the sum of all primes less than or equal to it 369,293 = smallest prime with the property that inserting a digit anywhere in the number will always yield a composite 370,261 = first prime followed by a prime gap of over 100 371,293 = 135, palindromic in base 12 (15AA5112) 389,305 = self-descriptive number in base 7 390,313 = Kaprekar number 390,625 = 58 397,585 = Leyland number
400,000 to 499,999 409,113 = sum of the first nine factorials 422,481 = smallest number whose fourth power is the sum of three smaller fourth powers 423,393 = Leyland number 426,389 = Markov number 426,569 = cyclic number in base 12 437,760 to 440,319 = any of these numbers will cause the Apple II+ and Apple IIe computers to crash to a monitor prompt when entered at the BASIC prompt, due to a short-cut in the Applesoft code programming of the overflow test when evaluating 16-bit numbers. Disassembled ROM. See comments at $DA1E. Entering 440000 at the prompt has been used to hack games that are protected against entering commands at the prompt after the game is loaded. 444,444 = repdigit 456,976 = 264 461,539 = Kaprekar number 466,830 = Kaprekar number 470,832 = Pell number 479,909 = the 40,000th prime number 483,840 = highly totient number 492,638 = number of signed trees with 12 nodes 498,960 = 35th highly composite number 499,393 = Markov number 499,500 = Kaprekar number
500,000 to 599,999 500,500 = Kaprekar number, sum of first 1,000 integers 505,447 = weakly prime 509,203 = Riesel prime 510,510 = the product of the first seven prime numbers, thus the seventh primorial. It is also the product of four consecutive Fibonacci numbers—13, 21, 34, 55, the largest such sequence of any length to be also a primorial. And it is a double triangular number, the sum of all even numbers from 0 to 1428. 514,229 = Fibonacci prime, 518,859 = Schröder–Hipparchus number 524,287 = Mersenne prime 524,288 = 219 524,649 = Leyland number 525,600 = minutes in a non-leap year 527,040 = minutes in a leap year 531,441 = 312 533,169 = Leyland number 533,170 = Kaprekar number 537,824 = 145 539,400 = harmonic divisor number 548,834 = equal to the sum of the sixth powers of its digits 554,400 = 36th highly composite number 555,555 = repdigit 584,141 = weakly prime 586,081 = number of prime numbers having seven digits. 587,999 = safe prime 599,999 = prime number.
600,000 to 699,999 604,171 = weakly prime 604,800 = number of seconds in a week 611,953 = the 50,000th prime number 614,656 = 284 625,992 = Riordan number 629,933 = number of reduced trees with 28 nodes 645,120 = double factorial of 14 646,018 = Markov number 649,532 = number of 26-bead necklaces (turning over is allowed) where complements are equivalent 664,579 = the number of primes under 10,000,000 665,280 = 37th highly composite number