Q: What is the smallest number that is a sum of two different natural numbers?

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Logically, the smallest number with 4 different prime factors would have to be the product of the smallest four prime numbers. So the smallest natural number with four different prime factors is 210 (2*3*5*7).

Here it is ! 10,234 !!

Zero isn't the smallest number, if a number at all. Negative numbers such as -4 are smaller.

45 is the smallest number that rounds to 50

Any number that has non-zero digits after the decimal point is NOT a natural number.

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The natural numbers are the numbers used to count things (the counting numbers). The smallest number of things you can have when you have some to count is one. Thus the smallest natural number is 1.

all the whole numbers including zero(0) are called natural numbers. 0 is the smallest natural number and the greatest number is unknown because natural numbers are endless .

Logically, the smallest number with 4 different prime factors would have to be the product of the smallest four prime numbers. So the smallest natural number with four different prime factors is 210 (2*3*5*7).

8 has three primes (2x2x2) in its factorization, and 30 is the smallest number having three different primes (2x3x5) in its factorization.

9 is the smallest natural number that is odd and composite: 9=3*3. 15 is the smallest natural number that is odd and a product of two numbers different from one and from each other: 15=3*5.

158

1 is the smallest natural number.

No. The smallest natural number is zero. Some very old texts say that the smallest natural number is one, but today the Peano Axiom provides a definition that includes zero in the natural numbers.

6666

30

1 is the Natural number which is the smallest Odd number.

"Smallest prime" would usually be taken as the number 2."Smallest whole number" is more problematic, since "whole number" may refer to any of the following:The set of integers (in this case, there is no smallest whole number)Natural numbers, including zero (0, 1, 2, 3...)Natural numbers, excluding zero (1, 2, 3, 4, ...)Even the term "natural numbers" may or may not include zero. Traditionally it doesn't include zero, but according to the Wikipedia article on natural numbers, "There is no universal agreement about whether to include zero in the set of natural numbers".Because of this ambiguity, it is better to avoid the use of the term "whole number", and instead use more specific terms, for example, "integers", "positive whole numbers" and "non-negative whole numbers".