OFFSET
1,1
COMMENTS
a(6) > 10^13. Taking into account primes multiplicity (A039752), the only triples up to 10^13 are those starting at 417162 and 6913943284.
LINKS
Carlos Rivera, Puzzle 358. Ruth-Aaron Pairs Revisited, The Prime Puzzles and Problems Connection.
Eric Weisstein's World of Mathematics, Ruth-Aaron Pair
Wikipedia, Ruth-Aaron pair
EXAMPLE
7539504384825 = 3^2 * 5^2 * 7^2 * 43 * 251 * 63361,
7539504384826 = 2 * 19 * 367 * 10181 * 53101,
7539504384827 = 17 * 457 * 26309 * 36887 and
3 + 5 + 7 + 43 + 251 + 63361 = 2 + 19 + 367 + 10181 + 53101 = 17 + 457 + 26309 + 36887.
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Resta, Jul 19 2013
STATUS
approved