Factor Calculator (因數機械人)
C. Prime Number (質數)
Prime number calculator
A prime number is a number that is only divisible by 1 and itself. For example, the following numbers are prime numbers: 2,3,5,7,11 etc., are prime numbers.
凡大於1的整數,除了它本身和1以外,不能被其他正整數所整除的,稱為質數,又稱素數,如2,3,5,7,11都是質數。最小的質數就是2。
Prime Number Robot (質數機械人)
Number & Date - 數字與日期
(A) Small number 1-100
*Cardinal Numbers *Number *Date *Ordinal numbers
(B) Big number 100 - 1,000,000
*Cardinal Numbers *Number *Date *Ordinal numbers