A Greek mathematician of the 2nd/3rd century BC. He was hugely important and made a formula for calculating prime numbers, he invented latitude and longitude and calculated the circumference of the...
He estimated the circumference of the earth within 10% of its actual size
eratosthenes discovered the circumfrance of the world. he was known as the first successful measurement..
Eratosthenes died in 194 BC from starvation. He was 81 years old when he died.
He contributed the eratosthenes sieve.