PROSPECTUS SUPPLEMENT FILE NO. 333-44173 (TO PROSPECTUS DATED JANUARY 29, 1998 AND PROSPECTUS SUPPLEMENT DATED RULE 424(B)(3) MARCH 12, 1998) PROSPECTUS NUMBER: 1728
MERRILL LYNCH & CO., INC. MEDIUM-TERM NOTES, SERIES B DUE NINE MONTHS OR MORE FROM DATE OF ISSUE FLOATING RATE NOTES
PRINCIPAL AMOUNT: $175,000,000 ORIGINAL ISSUE DATE: June 11, 1998 CUSIP NUMBER: 59018S K45 STATED MATURITY DATE: June 11, 1999 INTEREST CALCULATION: DAY COUNT CONVENTION: /x/ REGULAR FLOATING RATE NOTE /x/ ACTUAL/360 / / INVERSE FLOATING RATE NOTE / / 30/360 (FIXED INTEREST RATE): / / ACTUAL/ACTUAL INTEREST RATE BASIS: / / LIBOR / / COMMERCIAL PAPER RATE / / CMT RATE / / ELEVENTH DISTRICT COST OF FUNDS RATE / / PRIME RATE / / CD RATE /x/ FEDERAL FUNDS RATE / / OTHER (SEE ATTACHED) / / TREASURY RATE DESIGNATED CMT PAGE: DESIGNATED LIBOR PAGE: CMT TELERATE PAGE: LIBOR TELERATE PAGE: CMT REUTERS PAGE: LIBOR REUTERS PAGE: INDEX MATURITY: Daily MINIMUM INTEREST RATE: Not Applicable SPREAD: 0.130% MAXIMUM INTEREST RATE: Not Applicable OPTIONAL "FLIP" COUPON: On December 11, 1998, ML&Co. may exercise a one-time right to convert in whole, but not in part, the entire principal amount of the Notes to regular Fixed Rate Notes at a rate of 6.00% per annum calculated on an Actual/360 basis and payable upon maturity with 30 days prior notice. INITIAL INTEREST RATE: 5.66% SPREAD MULTIPLIER: Not Applicable INTEREST RESET DATES: Daily commencing June 11, 1998, through the Maturity Date; subject to following business day convention. INTEREST PAYMENT DATES: Quarterly on the 11th of September, December, March, and Maturity Date; subject to following business day convention. REPAYMENT AT THE OPTION OF THE HOLDER: The Notes cannot be repaid prior to the Stated Maturity Date. REDEMPTION AT THE OPTION OF THE COMPANY: The Notes cannot be redeemed prior to the Stated Maturity Date. FORM: The Notes are being issued in fully registered book-entry form. TRUSTEE: The Chase Manhattan Bank DATED: June 8, 1998