Most states have an equivalent of a Charitable Trusts Bureau, usually under the Secretary of State's authority. They'll have a list of those charities that are incorporated in your state, and/or registered to do business in your state.
Pennsylvania has 501 school districts.
501 is evenly divisible by 3, 167, 501 and 1. 501 / 3 = 167 501 / 167 = 3 501 / 501 = 1 501 / 1 = 501
sqrt(251001) = +/-501
105% of 501= 105% * 501= 1.05 * 501= 526.05
98% of 501= 98% * 501= 0.98 * 501= 490.98
60% of 501= 60% * 501= 0.6 * 501= 300.6
501, 502, 503 etc. There are 3499 of them and I have no desire to list them all.
The address of the Roundtown Conservancy Inc is: Po Box 501, Circleville, OH 43113-0501
The factors of 501 are: 1 3 167 501
501 is divisible by: 1, 3, 167, 501.
1 x 501, 3 x 167 = 501