## 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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|ordinal-number = thirty first |
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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]] |
+ | |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== |
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*1 can divide 31 |
*1 can divide 31 |
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*29 cannot |
*29 cannot |
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*30 also cannot |
*30 also cannot |
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− | *31 can divide |
+ | *31 can divide itself |

+ | [[Category:Prime numbers from 1-100]] |

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.
## 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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