Hello everyone.

I came across this statement and have been looking for a proof. Can anyone help me out?

Prove that1, 6 and 120 are the only numbers which are both triangular and factorials.

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- May 20th 2011, 12:12 PMobinnaokechukwuTriangular Factorials proof
Hello everyone.

I came across this statement and have been looking for a proof. Can anyone help me out?

Prove that**1, 6 and 120 are the only numbers which are both triangular and factorials.** - Jun 9th 2011, 11:18 AMChris11