Possible hex codes of length 138
Total possible hex codes
14,742,040,721,959,145,907,193,572,581,985,425,355,144,223,517,251,720,423,344,555,860,334,469,384,344,331,453,461,432,520,225,229,560,708,860,839,963,921,269,139,728,846,210,643,721,220,943,102,544,658,968,920,505,450,496 (~1.4742040721959E+148 million trillion)
14,742,040,721,959,145,907,193,572,581,985,425,355,144,223,517,251,720,423,344,555,860,334,469,384,344,331,453,461,432,520,225,229,560,708,860,839,963,921,269,139,728,846,210,643,721,220,943,102,544,658,968,920,505,450,496 (~1.4742040721959E+148 million trillion)
