<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2004-04-20</periodOfReport>

    <dateOfOriginalSubmission>2004-04-20</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001273397</issuerCik>
        <issuerName>PROCENTURY CORP</issuerName>
        <issuerTradingSymbol>PROS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001068614</rptOwnerCik>
            <rptOwnerName>FEIGHAN EDWARD F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10055 SWEET VALLEY DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CLEVELAND</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44125</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman, President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option (right to purchase Common Shares)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>10.5</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-04-20</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>49800</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">1/36 of the total stock options will vest for each calendar month of service by the reporting person after the date of the grant, April 20, 2004, with the total number of stock options becoming vested after 36 calendar months of service by the reporting person. The reporting person's original Form 3 incorrectly stated that 1/3 of the stock options would vest each year after the date the stock options were granted to the reporting person.</footnote>
        <footnote id="F2">The reporting person's original Form 3 incorrectly stated the number of common shares underlying the stock option, reporting 59,100 common shares instead of 49,800 common shares.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Amy B. McGann, by Power of Attorney</signatureName>
        <signatureDate>2004-08-11</signatureDate>
    </ownerSignature>
</ownershipDocument>

