A372629 Prime numbers whose sum of digits is a palindrome.

2, 3, 5, 7, 11, 13, 17, 23, 29, 31, 41, 43, 47, 53, 61, 71, 83, 101, 103, 107, 113, 131, 137, 151, 173, 191, 211, 223, 227, 233, 241, 251, 263, 281, 311, 313, 317, 331, 353, 401, 421, 431, 443, 461, 499, 503, 521, 601, 641, 701, 769, 787, 821, 859, 877, 911, 967, 1013, 1019, 1021, 1031, 1033, 1051

Offset

1,1

Links

James S. DeArmon, Table of n, a(n) for n = 1..999

James S. DeArmon, Common LISP code for A372629

Example

2411 is a term (prime, and digits sum to 8, a palindrome);
9931 is a term (prime, and digits sum to 22, a palindrome);
10099997 is a term (prime, and digits sum to 44).

Prog

(Python)
import sympy
def sum_of_digits(n):
    return sum(int(digit) for digit in str(n))
def is_palindrome(n):
    return str(n) == str(n)[::-1]
# Find prime numbers between 1 and 10000 whose sum of digits is a palindrome
prime_palindrome_numbers = []
for num in range(1, 10000):
    if sympy.isprime(num):
        digit_sum = sum_of_digits(num)
        if is_palindrome(digit_sum):
            prime_palindrome_numbers.append(num)
print(prime_palindrome_numbers)
(Common LISP -- see link)

Crossrefs

Cf. A002385, A007500, A033620

Sequence in context: A194954 A344384 A299956 * A368732 A192503 A040067

Adjacent sequences: A372626 A372627 A372628 * A372630 A372631 A372632

Keyword

nonn,base,less

Author

James S. DeArmon, May 07 2024

Status

approved