SchnauzerGeek

As a keen camper and geoocacher, it often takes me a while to find a nice campsite near a series of caches. Not much information on the internet, so I have made a Facebook group called Geocamping UK. All welcome to join. The idea is we all add suitable campsites near caches and share information. Thanks Geocamping Link

Thank you for the helpful replies It always was a made up number , ending in 123456.

Thanks but still don't get it. Would you be kind enough to show a worked example, say the phone number was 07923123456

New to this so need help please. Its a 2 part cache, the first part is a sign with a 11 digit phone number on it that we have found using iphone 5c. The description says this Also on this board you will find an 11 digit phone number ABCDEFGHIJK Substitute into the following formula to reach the cache N54 B(C-E).(E-F)G(D- B ) W000 BE.(I-J)A(K-H) What does this mean? Also, when we do get the anser can anyone advise how to enter in tomtom for iphone in a format it recognises? or on the iphone should I use something else other than tomtom? Thanks