כָּֽל־הַפְּקֻדִ֞ים לְמַחֲנֵ֣ה אֶפְרַ֗יִם מְאַ֥ת אֶ֛לֶף וּשְׁמֹֽנַת־אֲלָפִ֥ים וּמֵאָ֖ה לְצִבְאֹתָ֑ם וּשְׁלִשִׁ֖ים יִסָּֽעוּ׃ (ס)
all that were numbered of the camp of Ephraim being a hundred thousand and eight thousand and a hundred, according to their hosts; and they shall set forth third.
Read kabbalistic (mystical) interpretation of Numbers 2:24: and classical mystical sources.