Claude just re-verified the entire thing from scratch in 11 days that took humans 358 years. In 1637, a French lawyer named Pierre de Fermat was reading a math book and scribbled a note in the margin. He claimed no three positive whole numbers a, b, c can ever satisfy aⁿ + bⁿ = cⁿ for any n greater than 2. Then he added the line that would haunt mathematicians for 358 years: "I have discovered a truly marvelous proof of this, which this margin is too narrow to contain." He never wrote it…