83
120
There are 17 such numbers.
An emirp number is a prime number which, when you reverse the digits, produces a different prime number. Therefore, there are no single-digit emirp numbers. The first three emirp numbers are: 13, 17, 31
102.
Any prime numbers of about 66 or 67 digits will do.
The smallest three-digit number divisible by the first three prime numbers (2, 3, and 5) and the first three composite numbers (4, 6, and 8) is 120.
The first three prime numbers containing the digit 7 are:7, 17, 37
120
The first 'three digit' Prime Number is 101.
There are 17 such numbers.
non-prime no.
An emirp number is a prime number which, when you reverse the digits, produces a different prime number. Therefore, there are no single-digit emirp numbers. The first three emirp numbers are: 13, 17, 31
The first three prime numbers are 2,3 and 5.
269
102.
Using prime factorization, there are 2 three digit numbers with 9 factors: 512 and 768. There are no three digit numbers with 10 or more prime factors. 512=2^9 and 768=3*2^8
Any prime numbers of about 66 or 67 digits will do.