מ 40 + ש 300 + ה 5 = 345, which is also אל שדי (1+30+300+4+10 = 345) and השם (5+300+40 = 345).
Meaning
Moshe is 345, and the tradition notices that El Shaddai is also 345, and so is ha-Shem, 'the Name' — the three-way identity the handlists quote as the reason Moses could speak with God face to face: the man, the name he served and the title used in place of the name are one number. It is one of the tidiest gematriot in the corpus and one of the most quoted.