Enter two numbers to check if the first number is divisible by the second number: Check
A natural number is said to be an absolute prime if it is prime and remains prime after any permutation of its digits.
Set of Absolute Prime Number from 2 up to 11111111111111111111111:
{2, 3, 5, 7, 11, 13, 17, 31, 37, 71, 73, 79, 97, 113, 131, 199, 311, 337, 373, 733, 919, 991, 1111111111111111111, 11111111111111111111111}
references:
https://oeis.org/A003459
https://www.jstor.org/stable/3618302
19
ReplyDelete29
19 is not absolute prime number since 91 = 7.13 is not prime. 29 also is not absolute prime since 92 is even.
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