A175072 Natural numbers m with result 2 under iterations of {r mod (max prime p < r)} starting at r = m.

2, 5, 7, 9, 13, 15, 19, 21, 25, 28, 31, 33, 36, 39, 43, 45, 49, 52, 55, 58, 61, 63, 66, 69, 73, 75, 78, 81, 85, 88, 91, 94, 96, 99, 103, 105, 109, 111, 115, 118, 120, 122, 126, 129, 133, 136, 139, 141, 144, 146, 148, 151

Offset: 1

Author

Jaroslav Krizek, Jan 23 2010

Keywords

• nonn

Comments

Complement of A175071.

Union of A175075 and A175076. [From Jaroslav Krizek, Jan 30 2010, A-numbers corrected R. J. Mathar, Feb 19 2010]

Examples

			Iteration procedure for a(6) = 15: 15 mod 13 = 2. Iteration procedure for a(10) = 28: 28 mod 23 = 5, 5 mod 3 = 2.