Back صيغة ليجندر Arabic Legendreův vzorec Czech Fórmula de De Polignac Spanish Formule de Legendre French נוסחת לז'נדר HE Legendreova formula Croatian Legendre-képlet Hungarian Identità di Legendre-de Polignac Italian ルジャンドルの公式 Japanese Formula lui Legendre Romanian
In mathematics, Legendre's formula gives an expression for the exponent of the largest power of a prime p that divides the factorial n!. It is named after Adrien-Marie Legendre. It is also sometimes known as de Polignac's formula, after Alphonse de Polignac.