Nikkei jumps 2.9 pct, logs longest run of weekly gains in 42 yrs

* Nikkei hits 32-month closing high, Topix climbs 2.2 pct * More upside expected in coming months - analyst By Tomo Uetake TOKYO, Jan 25 (Reuters) - Japan's Nikkei average jumped 2.9 percent on Friday to log an 11th straight week of gains, its longest such run since 1971, after a drop in the yen to a 2-1/2-year low against the dollar spurred exporters higher and fuelled optimism about earnings. The Nikkei 225 scored its biggest one-day gain in nearly two years to end at 10,926.6