There 10 prime numbers from 1-29 which are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29
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No, 129 is not a prime number. A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. In the case of 129, it can be factored as 3 x 43, so it is not prime.
The numbers 83, 89, 97, 101, 103, 107, 109, 113 and 127 are prime.
2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 = 129
The 4 factors of 129 are 1, 3, 43, and 129. The prime factors of 129 are 3 and 43.
There are infinite prime numbers as there is infinite numbers. You cannot limit the counting of primes.