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  • 30 (number) - Wikipedia
    30 is an even, composite, and pronic number With 2, 3, and 5 as its prime factors, it is a regular number and the first sphenic number, the smallest of the form , where r is a prime greater than 3
  • Number 30: Power integer. Comprehensive Review
    30 is the index number for Fibonacci number, F 30 = 832040 = 5∗11∗23∗31∗61 = the largest Fibonacci number with 6 digits 30 is the smallest integer with three distinct prime divisors
  • Number 30 facts
    30 is the first sphenic number, that is the smallest number with 3 distinct prime divisors 30 is the largest number with the property that all smaller numbers relatively prime to it are prime
  • Number 30 - Curious Math Facts and Interesting Properties
    Explore the hidden nature of 30, an even number composed of three distinct primes multiplied together Includes Prime Factorization, Divisors, Bases and Fun Facts for students, number lovers and curious minds
  • About The Number 30 - Numeraly
    Explore the fascinating world of the number 30! Discover its meanings, facts, significance in math, science, religion, and more Unravel the mysteries behind this intriguing numeral
  • 30 Definition Meaning - Merriam-Webster
    : a number equal to three times 10 see number 2 plural : the numbers 30 to 39 especially : the years 30 to 39 in a lifetime or century thirtieth -ē-əth
  • Thirty Facts About The Number 30 - The Fact Site
    Numbers each have their own value depending on what importance people give to them, maybe it marks an anniversary, or a lucky number Well, here's 30 facts!
  • 30 (number) - definition of 30 (number) by The Free Dictionary
    1 a cardinal number, 10 times 3 2 a symbol for this number, as 30 or XXX 3 a set of this many persons or things 4 thirties, the numbers from 30 through 39, as in referring to the years of a lifetime or of a century or to degrees of temperature
  • What does 30 mean? - Definitions. net
    30 is a positive integer that comes after 29 and before 31 It is an even number and it is also considered a composite number, meaning it can be divided evenly by numbers other than 1 or itself
  • What are the Factors of 30? - BYJUS
    The factors of 30 are the numbers that divide 30 exactly without leaving a remainder As the number 30 is an even composite number, it has factors other than 1 and 30


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英文名字起源

希伯來
希臘
條頓
印度
拉丁
拉丁語
古英語
英格蘭
阿拉伯
法國
蓋爾
英語
匈牙利
凱爾特
西班牙
居爾特
非洲
美洲土著
挪威
德國
威爾士
斯拉夫民族
古德語
愛爾蘭
波斯
古法語
盎格魯撒克遜
意大利
蓋爾語
未知
夏威夷
中古英語
梵語
蘇格蘭
俄羅斯
土耳其
捷克
希臘;拉丁
斯干那維亞
瑞典
波蘭
烏干達
拉丁;條頓
巴斯克語
亞拉姆
亞美尼亞
斯拉夫語
斯堪地納維亞
越南
荷蘭






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