There are different ways to calculate many digits of formula_1. This is of limited use though.
ð ɛ ɹ ɑ ɹ WORD_BOUNDARY d ɪ f ɹ ə n t WORD_BOUNDARY w eɪ z WORD_BOUNDARY t ə WORD_BOUNDARY k æ l k j ʊ l eɪ t WORD_BOUNDARY m ɛ n i WORD_BOUNDARY d ɪ d̠ʒ ɪ t s WORD_BOUNDARY ʌ v WORD_BOUNDARY f ɔ ɹ m j ʊ l ə WORD_BOUNDARY w ʌ n WORD_BOUNDARY ð ɪ s WORD_BOUNDARY ɪ z WORD_BOUNDARY ʌ v WORD_BOUNDARY l ɪ m ɪ t ɪ d WORD_BOUNDARY j uː s WORD_BOUNDARY ð oʊ WORD_BOUNDARY