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(Created page with "{{Infobox |title = 31 |image = 31.png |imagewidth = 200 |roman-number = XXXI |ordinal-number = thirty first |previous = <font color="white">29</font> |next = [[37|<font...")
 
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|ordinal-number = thirty first
 
|ordinal-number = thirty first
 
|previous = [[29|<font color="white">29</font>]]
 
|previous = [[29|<font color="white">29</font>]]
|next = [[37|<font color="white">37</font>]]}}31 is a [[1-100|prime number from 1-100]]. 31 has 2 factors, 1 and 31. It is said to be a number wherein when digits are added together, they make a composite number. It is the eleventh prime number, and the eleventh prime number from 1-100.[[File:31.png|thumb]]
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|next = [[37|<font color="white">37</font>]]}}31 is a [[1-100|prime number from 1-100]]. 31 has 2 factors, 1 and 31. It is said to be a number wherein when digits are added together, they make a composite number. It is the eleventh prime number, and the eleventh prime number from 1-100. [[File:31.png|thumb]]
 
==Proofs==
 
==Proofs==
 
*1 can divide 31
 
*1 can divide 31
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*29 cannot
 
*29 cannot
 
*30 also cannot
 
*30 also cannot
*31 can divide 31
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*31 can divide itself
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[[Category:Prime numbers from 1-100]]

Revision as of 09:27, November 23, 2013

31 is a prime number from 1-100. 31 has 2 factors, 1 and 31. It is said to be a number wherein when digits are added together, they make a composite number. It is the eleventh prime number, and the eleventh prime number from 1-100. 
31

Proofs

  • 1 can divide 31
  • 2 cannot
  • 3 cannot
  • 4 - 28 cannot
  • 29 cannot
  • 30 also cannot
  • 31 can divide itself
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