# data[].attributes.body
Login to your Padlet account (if you have already registered with your SST email address)

If not, remember to enter your name in the title of the first post you put up under your index number.

# data[].attributes.body
Access the LINK: https://www.visnos.com/demos/sieve-of-eratosthenes

Setting: MULTIPLES

"IGNORE "1" since we know it is neither PRIME nor COMPOSITE.

Start with "2".

Answer the following QUESTIONS in the post.

Adapted from Study Notes (p6)

# data[].attributes.custom_properties.l2oFToDM
No 2 can only be dived by one and itself 

# data[].attributes.custom_properties.SLh70DY0
No because some odd numbers can still be divided by a one digit odd number. Example: 75/5=15 

# data[].attributes.custom_properties.l2oFToDM
No because 2 can only be divided by 1 and 2 so it is a prime number.

# data[].attributes.body
A) 61 67

B) false. 9 is an odd number and it has 3 factors (1,3,9)

C) False, 2 is even and it is a prime number and has 2 factors (1,2)

D) for a prime number greater then 5 all the last digits will either be 1,3,7 or 9

# data[].attributes.custom_properties.PNUkF3FE
for a prime number greater then 5 all the last digits will either be 1,3,7 or 9

# data[].attributes.custom_properties.SLh70DY0
false. 9 is an odd number and it has 3 factors (1,3,9)

# data[].attributes.custom_properties.l2oFToDM
False, 2 is even and it is a prime number and has 2 factors (1,2)

# data[].attributes.custom_properties.PNUkF3FE
The the numbers that are one digit and two digit that is bigger than 5 is 1,3,9,7 except for 1

# data[].attributes.custom_properties.l2oFToDM
Yes as 2 is the only prime number and the rest is odd

# data[].attributes.custom_properties.SLh70DY0
No, like 1 is a odd number but does not have 2 factors.

# data[].attributes.custom_properties.l2oFToDM
Yes, because all of them can be divided by 2 or 1 but sometimes even more.

# data[].attributes.body
:D

# data[].attributes.custom_properties.PNUkF3FE
The last digit of each number has the following odd numbers : 1,3,7,9. 

# data[].attributes.custom_properties.SLh70DY0
No. There are odd numbers like 21 or 75 that are divisible by 3 and 5 respectively. All the prime numbers are odd EXCEPT 2.

# data[].attributes.custom_properties.l2oFToDM
No. Although all even numbers are a composite number, 2 is a prime number as it only has 2 factors - 1 and itself. 

# data[].attributes.custom_properties.SLh70DY0
No. Some odd numbers are composite numbers like 25, which has 3 factors: 1,3 and 25

# data[].attributes.custom_properties.l2oFToDM
False. 2, an even number, is a prime number as it has only 2 factors: 1 and 2

# data[].attributes.custom_properties.PNUkF3FE
The last digit is always an odd number. (1,3,7,9)

# data[].attributes.custom_properties.SLh70DY0
No, for example the odd number 77 has 4 factors, 1, 77, 7 and 11, making it a composite number.

# data[].attributes.custom_properties.SLh70DY0
no as even numbers like 38 can also be prime

# data[].attributes.custom_properties.l2oFToDM
no as odd numbers like 99 can also be composite 

# data[].attributes.custom_properties.SLh70DY0
No,9 is a odd number and has 3 factors(1,3,9)

# data[].attributes.custom_properties.l2oFToDM
No. 2 is a prime number and is only divisible by 1 and 2.

# data[].attributes.custom_properties.SLh70DY0
No.The multiples of odd numbers are odd numbers. However those multiples will not be considered as primes as they have 2 factors excluding 1 and the multiple itself.

# data[].attributes.custom_properties.SLh70DY0
No, odd multiples of 3 and 5 like 9,15,21,25

# data[].attributes.body
Ethan

# data[].attributes.custom_properties.SLh70DY0
No numbers like 11, 15, 33,  are examples of odd number that are not prime number

# data[].attributes.custom_properties.l2oFToDM
No all even numbers except 2 are composite

# data[].attributes.custom_properties.SLh70DY0
No as long as it is a multiple of a number 3+ that is not itself like 9 is odd but it is divisible by three so it is not prime

# data[].attributes.body
HI

# data[].attributes.custom_properties.SLh70DY0
no  like odd numbers like 33 has 11,3, its factors

# data[].attributes.custom_properties.l2oFToDM
no 2 is the only even number that is a prime

# data[].attributes.custom_properties.SLh70DY0
no because there's numbers like 14 and 21 which are both divisible by 7 and odd numbers

# data[].attributes.custom_properties.PNUkF3FE
The last digit cannot be a 5 as any number that ends with 5 is a multiple of 5, and therefore is a composite number, for example, 45=5*9

# data[].attributes.custom_properties.SLh70DY0
No. 3 is an odd prime number, but if it is multiplied by an odd number, it will give an odd composite number such as 3*5=15.

# data[].attributes.custom_properties.l2oFToDM
No, because 2 is the smallest even number, it is the only even prime number, as if you were to multiply 2 by any number other than 1, you would get an even composite number such as 2*3=6.

# data[].attributes.custom_properties.PNUkF3FE
It is not even, not a 5 or a 0 and every 1 to 2  tens the last digit signifies it's a composite number.

# data[].attributes.custom_properties.SLh70DY0
No. It is because there are odd numbers such as 25 which are composite numbers. So not all numbers are prime numbers.

# data[].attributes.custom_properties.l2oFToDM
No. Because 2 is the only prime even number. It is also the smallest prime number since prime numbers can't be negative.

# data[].attributes.custom_properties.SLh70DY0
No, as some odd numbers can be divided by 3, 5, 7 etc.

# data[].attributes.custom_properties.l2oFToDM
No, even though it’s true, the only number that opposes this is 2, which can only be divided by 1 and itself.

# data[].attributes.custom_properties.SLh70DY0
No some odd number like 15 have more than 2 factors meaning they are not prime numbers

# data[].attributes.custom_properties.SLh70DY0
no, because some numbers like 9 are odd numbers but are composite numbers

# data[].attributes.body
I submit on time

# data[].attributes.custom_properties.SLh70DY0
No. Some odd numbers have more than two factor like 9, which is a multiple of 1,3 and 9. Thus, some but not all odd numbers are prime numbers.

# data[].attributes.custom_properties.l2oFToDM
Technically yes. This is because all even numbers except 2 are multiples of 2, making them have more than 2 factors. Thus, 99.9999999999999999% of all even numbers are prime numbers.