Tags » Arithmetic Progression

Sets of Palindromic primes in arithmetic progression

Palindromic primes: prime numbers whose decimal expansion is a palindrome:
A002385

2, 3, 5, 7, 11, 101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, 919, 929, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831, 13931, 14341, 14741, 15451, 15551, 16061, 16361, 16561, 16661, 17471, 17971, 18181, … 34 more words

Number Puzzles

Sum of an n number of cubes in arithmetic progression

Sum of n number of cubes in arithmetic progression with common difference d

d = 1


d = 2







d = 3








d = 4… 33 more words

Number Puzzles