Richard Strutz, president of National Bank of Alaska, can come up with  a few good reasons why prospective acquirers would think twice about buying   his bank.   
It gets really cold in Anchorage, for one.
  
"Outside banks that have talked to us about merging have said that if  they were to put some of their people up here, who would want to go?" 
Mr. Strutz was only half-joking.
  
The states of Alaska and Hawaii are, in effect, banking enclaves with  market leaders that have managed to remain independent for reasons that   have as much to do with geography as anything else.   
The same factor may be at work in and around Utah, where First Security  Corp. and Zions Bancorp. have built empires in a geographically logical,   self-contained region while keeping giants from the West Coast and Midwest   at bay.     
The Mid-South states, including Tennessee, Alabama, and Mississippi, may  be shaping up the same way, with a few banking companies growing into   regional powerhouses. They are second-tier in relation to, say, NationsBank   Corp. or First Union Corp., but they want to call their own shots when   merger proposals present themselves and seem increasingly capable of doing   so.         
  
But given their remoteness, Alaska and Hawaii are the purest of the  regional enclaves, offering the clearest perspectives on the survivability   of banks below the top tier. Dealing with less-than-perfect market   conditions and independent in spirit, bankers in the 49th and 50th states   like their midsize and regional status-and their geography helps them   preserve it.         
"An institution in an isolated, challenging market like Hawaii or Alaska  ... is not an easy deal for a potential acquirer, so there is less   opportunity for cost savings," said Joseph K. Morford, an analyst at BT   Alex. Brown in San Francisco.     
An acquirer should find a lot to like in Mr. Strutz's holding company,  the $2.8 billion-asset National Bancorp of Alaska. It has a 40% share of a   banking market that is attractive enough to have heavyweights like San   Francisco-based BankAmerica Corp. and Cleveland-based KeyCorp competing   there.       
Personal and business loan demand were relatively strong last year, Mr.  Strutz said. Earnings per share rose 8% in 1997, to $1.64. 
  
But the Alaska economy's heavy dependence on the petroleum industry,  which has not seen much expansion in recent years, gives diversification-   minded bankers pause. A sparse, slowly growing population of 616,000,   coupled with a lackluster 1% economic growth rate, turned off at least one   potential suitor, Mr. Strutz said.       
"We were sitting in a bank's office in Los Angeles, and they said, 'Why  should we be interested in you? There is more market in the view out my   window than your entire state,'" he said.   
"The Alaska market may have seen some growth 20 years ago when they were  starting to build the oil pipeline, but what new growth areas are there   now?" asked Eric E. Rothman, an analyst at Stephens Inc., Little Rock, Ark.   
Another challenge, also at play at some of the regional independents in  the contiguous United States, is social. A buyer would have to convince   National Bancorp of Alaska chairman Edward B. Rasmuson and his family, who   own roughly 60% of the stock, to give up an institution they have owned   since 1917.       
"Every morning I can have a stockholder meeting in the mirror when I  shave," Mr. Rasmuson said. 
That is the rugged survivalist mentality engendered by the vast, bleak  expanses of Alaska. "We want to chart our own destiny and run our own   institution," Mr. Rasmuson asserted.   
"The bank does well financially, but that is not the only reason we are  in business," added Mr. Strutz. "The Rasmusons were raised in Alaska, they   like it here, and they want to use this opportunity to give back to the   state."     
As much as 3% of the bank's net income is donated annually to charitable  causes, he said. 
Much like the Alaskan bank, Pacific Century Financial Corp. of Honolulu  and its local rival, First Hawaiian Inc., grew up in isolation. 
"Both banks in Hawaii are independent-minded and enjoy their market  position. And if an acquirer wanted to come in, they would face a limited   growth prospect and population," said Mr. Morford of BT Alex. Brown.   
Pacific Century president and chief operating officer Richard J. Dahl  said that while technology has reduced the effects of isolation, it takes   special know-how to operate in the island environment. Indeed, BankAmerica   sold its $1.8 billion-asset Hawaii savings bank last year, citing an   inability to grow.       
"While nowhere is totally cut off from the rest of the world any more,  we are an isolated, limited-growth market," Mr. Dahl said. 
Yet in recent times, the holding company of $15 billion-asset Bank of  Hawaii has been seen as more vulnerable to a takeover. With the Hawaiian   economy entering its eighth year of slow growth, the stock price has been   consistently depressed. Pacific Century's shares appreciated 18% during   1997, while other regional bank prices were up, on average, about 50%.       
The Hawaii institution's fourth-quarter earnings per share of 41 cents  were a penny lower than in the year-earlier period. 
"We are definitely more alert than ever before that the weakness in our  price could make us a target," Mr. Dahl said. But a massive cost-cutting   and restructuring campaign announced last month, which would pare the work   force by 11% and the 100-branch network by 25, is expected to boost   performance measures.       
"We islanders approach problems differently," Mr. Dahl added. "We take  care of them ourselves instead of relying on others and thus run this bank   with the goal of remaining independent."