He helped to popularize the 0-9 digit number, came up with the Fibonacci sequence and the sub-set of Fibonacci primes.
The first few Fibonacci primes are 2, 3, 5, 13, 89. Fibonacci primes with thousands of digits have been found but it is not known whether there are infinitely many (Wikipedia, see link).
The set of primes would be one. The set of Mersenne primes is another. The set of all primes below 50 is another. And so on. A set which includes all primes, and only them, is the set of numbers having exactly 2 factors.
sub set is set
19
He helped to popularize the 0-9 digit number, came up with the Fibonacci sequence and the sub-set of Fibonacci primes.
The first few Fibonacci primes are 2, 3, 5, 13, 89. Fibonacci primes with thousands of digits have been found but it is not known whether there are infinitely many (Wikipedia, see link).
The set of primes would be one. The set of Mersenne primes is another. The set of all primes below 50 is another. And so on. A set which includes all primes, and only them, is the set of numbers having exactly 2 factors.
sub set is set
not a sub set
The larger number of the fourth set of twin primes is 19.
19
8, if it is the Fibonacci sequence; 7, if it the sequence of non-composite numbers (1 and primes); there are other possible answers.
1-16: 6 primes 16-32: 5 primes 32-48: 4 primes
No. Asparagus is a vegetable. It is not an ordered set of numbers - which is what a sequence is!
There is the Fibonacci sequence but what is the Fibonacci code?
the middle of a unversal set