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The final digit of a triangular number is 0, 1, 3, 5, 6, or 8, and thus such numbers never end in 2, 4, 7, or 9. A final 3 must be preceded by a 0 or 5; a final 8 must be preceded by a 2 or 7. In base 10, the digital root of a nonzero triangular number is always 1, 3, 6, or 9. Hence, every triangular number is either divisible by three or has a ...
1324 = if D(n) is the nth representation of 1, 2 arranged lexicographically. 1324 is the first non-1 number which is D(D(x)) [237] 1325 = Markov number, [238] centered tetrahedral number [239] 1326 = 51st triangular number, [28] hexagonal number, [29] Mertens function zero; 1327 = first prime followed by 33 consecutive composite numbers
This is an accepted version of this page This is the latest accepted revision, reviewed on 3 February 2025. See also: Orders of magnitude (numbers) and Long and short scales Natural number 1000000000 List of numbers Integers ← 10 0 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 Cardinal One billion (short scale) One thousand million, or one milliard (long scale) Ordinal One billionth (short ...
Thus, a billion is 1000 × 1000 2 = 10 9; a trillion is 1000 × 1000 3 = 10 12; and so forth. Due to its dominance in the financial world (and by the US dollar), this was adopted for official United Nations documents. Traditional French usage has varied; in 1948, France, which had originally popularized the short scale worldwide, reverted to ...
The root mil in million does not refer to the numeral, 1. The word, million, derives from the Old French, milion, from the earlier Old Italian, milione, an intensification of the Latin word, mille, a thousand. That is, a million is a big thousand, much as a great gross is a dozen gross or 12 × 144 = 1728. [7]
Pages in category "Triangles of numbers" The following 29 pages are in this category, out of 29 total. ... Triangle of partition numbers; Trinomial triangle; W.
Hyphenate all numbers under 100 that need more than one word. For example, $73 is written as “seventy-three,” and the words for $43.50 are “Forty-three and 50/100.”
1 / 10 000 One ten-thousandth, [zero] point zero zero zero one, One myriadth, one permyria, one permyriad, one basis point: 0.000 01 1 / 100 000 One hundred-thousandth, [zero] point zero zero zero zero one, One lakhth, one perlakh 0.000 001 1 / 1 000 000 One millionth, [zero] point zero zero zero zero zero one, One ppm ...