The prime numbers between 1 and 31 (inclusive) are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31.
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The prime numbers between 40 and 50 are 41, 43, 47. So their sum is 131.
109 113 127 131
The numbers 127, 131, 137, 139, 149, 151 and 157 are prime.
131, 137 and 139
131 is a prime number. The only two factors of a prime number are 1 and itself.The two factors of 131 are 1 and 131. There are only two factors of a prime number.The only factor pair of 131 is 1 x 131. There is only one factor pair of a prime number.The proper factors of 131 are only 1 or,if the definition you are using excludes 1, there are none.The only prime factor of 131 is 131. There is only one prime factor of a prime number - itself.The distinct prime factor (listing each prime factor only once) of 131 is also 131.The prime factorization of 131 is 131. In some cases, to emphasize that it is prime, you might write the prime factorization as 1 x 131.NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.