First 315 happy primes

Happy primes: Primes that eventually reach 1 under iteration of: x -> sum of squares of digits of x.

First 315 happy primes have values between 7 and 15737.

Checkout list of first: 10, 50, 100, 500, 1000 happy primes. You can also check all happy primes.

7, 13, 19, 23, 31, 79, 97, 103, 109, 139, 167, 193, 239, 263, 293, 313, 331, 367, 379, 383, 397, 409, 487, 563, 617, 653, 673, 683, 709, 739, 761, 863, 881, 907, 937, 1009, 1033, 1039, 1093, 1151, 1277, 1303, 1373, 1427, 1447, 1481, 1487, 1511, 1607, 1663, 1697, 1733, 1847, 1933, 2003, 2039, 2063, 2111, 2221, 2309, 2333, 2339, 2383, 2393, 2417, 2557, 2693, 2741, 2833, 2851, 2903, 2963, 3001, 3019, 3067, 3079, 3083, 3109, 3137, 3209, 3301, 3313, 3319, 3323, 3329, 3331, 3371, 3391, 3463, 3607, 3637, 3643, 3673, 3709, 3779, 3797, 3803, 3823, 3833, 3907, 3923, 3931, 4111, 4127, 4157, 4217, 4271, 4363, 4441, 4447, 4481, 4517, 4663, 4721, 4751, 4817, 4871, 5147, 5227, 5281, 5417, 5471, 5477, 5527, 5569, 5659, 5741, 5821, 5879, 5897, 5987, 6037, 6053, 6073, 6163, 6197, 6203, 6329, 6337, 6343, 6353, 6361, 6367, 6373, 6389, 6637, 6661, 6673, 6701, 6703, 6719, 6733, 6763, 6791, 6803, 6899, 6917, 6971, 6983, 7039, 7127, 7309, 7331, 7451, 7457, 7481, 7541, 7547, 7589, 7603, 7691, 7793, 7841, 7937, 8081, 8147, 8233, 8369, 8521, 8597, 8693, 8699, 8741, 8821, 8929, 8963, 8969, 9001, 9007, 9013, 9103, 9133, 9203, 9323, 9377, 9587, 9623, 9689, 9829, 9857, 10009, 10039, 10067, 10093, 10141, 10151, 10177, 10211, 10247, 10303, 10333, 10337, 10427, 10457, 10487, 10607, 10663, 10733, 10771, 10847, 10903, 11113, 11131, 11149, 11159, 11197, 11243, 11251, 11311, 11423, 11467, 11471, 11483, 11491, 11519, 11681, 11719, 11941, 11971, 12011, 12101, 12143, 12149, 12347, 12413, 12437, 12473, 12491, 12511, 12583, 12671, 12743, 12823, 12841, 12853, 12941, 12959, 13003, 13009, 13033, 13037, 13093, 13177, 13241, 13309, 13339, 13411, 13421, 13457, 13487, 13499, 13577, 13679, 13697, 13757, 13841, 13903, 13933, 13967, 14011, 14057, 14081, 14087, 14207, 14281, 14321, 14327, 14347, 14387, 14407, 14437, 14449, 14461, 14537, 14549, 14551, 14561, 14723, 14753, 14783, 14813, 14821, 14831, 14939, 15101, 15121, 15299, 15377, 15451, 15461, 15473, 15541, 15641, 15679, 15737

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