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29 is a prime number from 1-100. 29 has 2 factors, 1 and 29. It is said to be another number wherein when digits are added together, they make a prime number. It is the tenth prime number, and the tenth prime number from 1-100. ## Proofs

• Therefore 29 has 2 factors

## As an Exponent of Mersenne Number

229 - 1, which is the number 536,870,911, can be factored into 233 x 1,103 x 2,089, and therefore not a prime number.

## Rela​tionship with other odd numbers

### The numbers before

• The previous prime number is 23. The numbers in between are composite.
• Among them, 25 is a square number, being 52 = 25.
• 27 is a cube number, being 33 = 27.
• 23 and 29 are six numbers apart; therefore, they are sexy primes.

### The numbers after

• The next odd number, 31, is a prime number.
• There are no odd numbers between 29 and 31. As a result, they are twin primes.
• 33, the odd number following 31, is not a prime number. It is divisible by 3 and 11.
• 35, the odd number following 33, is also not a prime number. It is divisible by 5 and 7.
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