import numpy as np
print(np.lcm.reduce([1,2,3,100]))
# Out[125]: 300

print(np.lcm.reduce([1,2,3,100,101]))
# Out[126]: 30300

print(np.lcm.reduce([1,2,3,100,101,99019]))
# Out[127]: -1294691596

print(30300*99019)
# Out[128]: 3000275700