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There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
420 has four prime factors. Prime factors don't usually travel in pairs.
There are 35 pairs of twin prime numbers totaling 69 numbers (prime number 5 appears twice in the twin pairs) between 0 and 1000.
2 and 5 are one such pair.
1and 47,5and 43,7and 41,11and 37,31an 17,19an 29
The numbers 2 and 3 are consecutive prime numbers. Are there other pairs of prime numbers which are consecutive numbers?
2+3,11+3,3+17
The product of all pairs of prime numbers is always the least common multiple of the two prime numbers.
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
420 has four prime factors. Prime factors don't usually travel in pairs.
There are three pairs.
There are 35 pairs of twin prime numbers totaling 69 numbers (prime number 5 appears twice in the twin pairs) between 0 and 1000.
Any pair of prime or relatively prime numbers.
2 and 5 are one such pair.
7 and 2 are the prime numbers having a difference of 5.
43
No - co-prime numbers are pairs of numbers which share no positive integer factors apart from 1. Twin prime numbers are a pair of prime numbers with a difference of 2.