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 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 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 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 to 199,999 100,003 = 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 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 = little Schroeder number 103,680 = highly totient number 103,769 = the number of combinatorial types of 5-dimensional parallelohedra 103,823 = 473, 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 105,664 = harmonic divisor number 109,376 = 1-automorphic number 110,880 = 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 120,284 = Keith number 120,960 = highly totient number 121,393 = Fibonacci number 124,000 = number of Islamic prophets 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,